DIAN GRIESEL, Ph.D., Founder & President
Dian Griesel, Ph.D. is a perception analyst, executive advisor, and media entrepreneur with more than three decades of experience advising select individuals as well as C-suite leaders and their teams across highly regulated, often capital-intensive industries and the public markets.
She is the founder of Perception Dynamics, a counseling and strategic training communications firm focused on the role of perception in decision-making, leadership behavior, risk management, and stakeholder influence. Her work treats perception not as a soft skill, but as an operating system that materially affects outcomes, valuation narratives, and executive performance under pressure.
Earlier in her career, Griesel built and led The Investor Relations Group, a global investor relations and public relations firm, advising more than 400 public and private companies, attending over 10,000 investor meetings and generating approximately $150 million in revenue prior to its sale to a publicly traded investment bank. Her advisory work placed her at the intersection of capital markets, corporate strategy, regulatory environments, and reputation risk, with direct exposure to SEC, FDA, FTC, and DoD-regulated contexts.
Griesel’s current advisory practice draws on this foundation, combining capital-markets fluency with applied behavioral psychology. As someone with limited hearing, Dian has become acutely skilled at tuning in to all sensory input, body language and unspoken messages to almost intuitively interpret conversations (though she’ll tell you intuition is a skill best enhanced with practical learning.) She works with executives and founders navigating personal and also professional inflection points — capital raises, leadership transitions, reputational risk, governance challenges, and high-stakes negotiations: Situations where perception, judgment, timing and communication of the message hold material influence.
She is also the founder/host of the Silver Disobedience® Perception Dynamics™ podcast which airs in 125 countries on every major podcast channel plus YouTube. It is in the Top 8% of all podcasts based on downloads, according to Spotify, and more relevant it holds listener attention as confirmed by ranking in the top 1% of engagement rates! (2025 Spotify Wrap Up) Dian has authored 15 books including Mastering the Rules of the Game: The Merger of Leadership, Perception and Purpose. Her broader body of work explores health, personal growth, business communications, media relations, investor relations, and the psychological mechanics behind influence and trust.
Griesel is known for her candid and analytically rigorous advisory style. Dian is frequently engaged where discretion, judgment, and long-term perspective matter more than performative leadership or tactical fixes.
In the spirit of full-disclosure, Dian is on the direct board with Wilhelmina New York.
Perhaps we start with a complimentary 30 minute call to discuss your needs and objectives.
212.825.3210
Dian@DianGriesel.com
DianGriesel.com
ANTHONY CELANO
Managing Director of StreetWise™ Trainings
Anthony Celano founded StreetWise Communication Training, which is now offered as a leadership development program by Perception Dynamics Inc. A retired New York Police Department (NYPD) Detective Sergeant Squad Commander with 22 years of service, Mr. Celano’s assignments included the Queens District Attorney’s Office Squad; Drug Enforcement Administration (DEA) Joint Task Force; Organized Crime Control Bureau; and, the Colombo Organized Crime Task Force. His leadership and investigative work led to testimony in major state and federal organized crime cases nationwide. Mr. Celano brings over four decades of investigative, law enforcement, and corporate security expertise to every StreetWise™ training he leads.
Following his distinguished NYPD career, Mr. Celano founded Full Security, Inc., a midtown Manhattan investigative firm serving Fortune 500 clients such as Morgan Stanley, Pepsi, McGraw Hill, Pershing Capital, BBDO, and PricewaterhouseCoopers. He also developed the StreetWise™ Communication Training Program, providing tailored risk-mitigation and communication training to organizations including News Corp, Bear Stearns, Rutgers University, Marsh & McLennan, and the NYPD.
Mr. Celano has been featured in Forbes, Crain’s New York Business, and Security Management Magazine, and has contributed to numerous industry publications, including Security Director Magazine and the ASIS Best Practices Manual. He co-authored Basic Security Investigation (Gould Publishing, 1996), with a preface by former NYPD Commissioner William Bratton. Notably, Mr. Celano is also an avid writer and the author of 8 Sergeant Markie Mystery Series novels and counting.
Mr. Celano holds multiple commendations from the NYPD, DEA, and American Legion. He is also a member of the Membership Committee of Tiro a Segno of New York, is a former Board member and served on their nominating committee. Mr. Celano is a Director on the Executive Committee of the Gotham City Networking Foundation and he hosts Authors/Wordsmith Networking Luncheons along with Peapack Private. Mr. Celano earned both his MA and BA in Sociology from Long Island University and St. Francis College, respectively.
Perhaps we start with a complimentary 30 minute call to discuss your needs and objectives.
📞 212.825.3210
📧 Dian@DianGriesel.com
🌐 DianGriesel.com
Here’s a mini-sampling of media coverage.
- Strategic Advisor Guides C-Suite Executives Through High-Stakes Decisions with Three Decades of Experience (The New York Telegraph)
- The Science of Reading Rooms How One Advisor Decodes Corporate Power Dynamics (Insider Weekly)
- Popular Podcasts from the Over 50 Crowd (Next Avenue)
- The 11 Best Times to Switch Jobs (U.S. News & World Report)
- Why Resilient Executives Are Better Leaders (SHRM.org)
- Multitasking and Mindfulness: Can They Work Together? (AMA Quarterly)
- ‘Being Yourself at Any Age Is Priceless’: Silver Disobedience influencer Dian Griesel on aging, priorities and surprise selfies (Next Avenue, PBS)
- Influencer Campaigns: Considerations When Choosing Creatives (Forbes)
- Your Longevity Plan Needs a Dumbell (LivelongMedia)
- Eliminate Assumptions and Listen with Your Gut (JLeder)
- Walking: Why You Should Do More at Any Age (Fit & Well)
- Rebound to a Healthier Happier You (City Lifestyle)
- The Advice a Successful Career Woman Wishes She Could Have Told Her Younger Self (Well + Good)
- Three Reasons Why Marketers Shouldn’t Overlook the Silver Generation (Forbes)
- Necessary vs. Unnecessary Public Speech: What is the Divide? (Forbes)
- Social Media: There Will Be Haters (Forbes)
- Why it Pays to Not Always Be “Right” in Business (Forbes)
- Making a Big Life or Business Decision? Write the Press Release First (Forbes)
- Work Life Balance: How Gene Simmons Saved My Soul (Inc. Magazine)
- What I Wear to Work (Bloomberg Business)
- The Many Uses of Images in Photography Therapy (Feature Shoot)
- I’m a 62-year-old Instagram influencer who also owns a PR firm. I worried what my clients would think, but being on social media has actually helped my career. (Business Insider)
- Woman to Watch: Dian Griesel (Sass Magazine)
- Sharing Insights on Aging (Healthline)
- A Time for “Silver Disobedience”: Dian Griesel on Modeling at 60 and Loving Yourself at Any Age (NBC: Know Your Worth)
- The Writer’s Block (LA Talk Radio)
- Word Play with Kristine Raymond (Word Play)
- The Best and Most Motivational Books for Women (ImproveHerHealth)
- When Writing a Book Sparks a Movement (Authority Magazine)
- Speak to Your Audience as an Equal (Thrive Global)
- 13 Women Entrepreneurs Talk About Their Nighttime Rituals (Morning Laziness)
- Silver Disobedience: An Interview with Dian Griesel (EndPain)
- The Real Reason Why I Wrote The Silver Disobedience Playbook (AARP)
- Fashion Over 50 Gets Attention on Instagram (AARP)
- Social Influencers Over Age 50 (AARP)
- Dian Griesel Lets Her Hair Go Gray in Style (Video; AARP)
- TurboCharged: A New Way to Lose Weight (ABC-TV)
