I'm the CEO of a cannabis and beverage company. I start my day in Central Park with my dog and hate being surrounded by 'yes' people.

Tech Insider : Business, Sports
Irwin D. Simon

Isa Zapata for BI

This as-told-to essay is based on a conversation with Irwin Simon, the chairman and CEO of Tilray, based in New York City. It's been edited for length and clarity.

I helped Mark Zuckerberg start Facebook and now I'm the CEO of Philo. Here's a day in my life in San Francisco balancing work and kids.

Tech Insider : Technology, Business, Travel
Andrew McCollum

Jason Henry for BI

This as-told-to essay is based on a conversation with Andrew McCollum, the 42-year-old CEO of Philo, based in San Francisco. It's been edited for length and clarity.

I'm a trauma surgeon turned longevity CEO. I get up at 5 a.m., avoid snacks, and keep my phone out of my bedroom.

Tech Insider : Business
Dr. Shah
Dr. Darshan Shah said doing the small things consistently had the biggest impact on his personal health journey.

Madeline Tolle for BI

This as-told-to essay is based on a conversation with Dr. Darshan Shah, the 53-year-old founder and CEO of longevity clinic Next Health, who's based in Malibu, California. It's been edited for length and clarity.

I'm still working in the medical field at 83. My husband doesn't need me at home staring at him all day — I want to be productive.

Tech Insider : Economy, Business, Travel
Barbara Fod
Barbara Ford, 83, works in the medical field.

Laura Thompson for BI

I'm 91 and the oldest working female comedian. Here's what I learned from starting a new career late in life.

Tech Insider : Economy, Business
D'yan Forest ate her home
D'yan Forest is the Guinness World Record holder for oldest working female comedian.

Lanna Apisukh for BI

I'm an 81-year-old home builder. People are shocked I'm still framing houses at my age, but I love what I do.

Tech Insider : Economy, Business, Travel
Jim Franck
Jim Franck, 81, is a homebuilder in Oregon who has no plans to stop working, despite being financially comfortable.

Brooke Herbert for BI

I'm an 83-year-old yoga instructor. I'm not your typical grandma — I still work to feel fulfilled and supplement my Social Security.

Tech Insider : Economy, Business, Travel
Barbara Thompson
Barbara Brown, 83, teaches chair yoga classes at nursing homes.

Laura Thompson for BI

I'm an ex-Clinton strategist turned CEO. I don't micromanage and love Chinese food and brain games — here's a day in my life.

Tech Insider : Business
Mark Penn

Valerie Plesch for BI

This as-told-to essay is based on a conversation with Mark Penn, the 71-year-old CEO and Chairman of Stagwell, based in Miami Beach. It's been edited for length and clarity.

Read Business Insider's stories and watch our video after nearly 200 interviews with workers over 80

Tech Insider : Economy, Business, Style
Barbara Ford, D'Yan Forest, Rich Colorado, Jane Way, June Boyd, Luis Bautista, Pat Fagin Scott, Sandy McConnell, Thomas Ferguson, Lydia HInds

Jason Henry, Laura Thompson, Lanna Apisukh, Matt Martian Williams, Brittany Greeson, Cassidy Araiza, Alyssa Schukar, Bridget Bennett, Tim Gruber, Michael J. Fiedler for BI

I'm the CEO of BeatBox Beverages. DJing, dad duty, and catching up with Mark Cuban are all part of my day.

Tech Insider : Business, Environment, Travel
Justin Fenchel
CEO of BeatBox Beverages Justin Fenchel stands with a cardboard cutout of Mark Cuban, an investor in the brand.

Susannah Kay for BI

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