My Greatist Routine asks fitness, health, and happiness all-stars how they stay on top of their game. Find the complete series here.

When it comes to inspiring fitness stories, it doesn’t get much better than Dan Trink. Since making health and fitness a priority in his late 20s, Dan has transformed his body and lifestyle, eventually leading him from a job in advertising to become the director of personal training at Peak Performance NYC. Read on to see how Dan balances his responsibilities both in and outside the gym, and find out what pushes him to keep learning every step along the way.

To learn more about Dan, check out his website and follow him on Twitter.

Are you a greatist, too? Tell us about your #imagreatist routine in the comments below.

Photo by Jay Sullivan; Design by Bob Al-Greene.