"The only time that you should look back in life is to see how far you've came!!!!," Hart captioned a shirtless photo. "I'm not done yet....The road to becoming the best version of myself continues!!! #HustleHart #Motivation#MoveWithHart #Results#hardworkpaysoff."
He also included a shoutout to his "partner in fitness," his trainer Ron "Boss" Everline.
Besides sticking with his fitness routine, the Philadelphia native is currently in his hometown shooting the dramatic comedy, Untouchable with Bryan Cranston. Hart also celebrated his daughter, Heaven's, 12th birthday earlier in the week.
"Wow where do I start….There aren't enough words to describe my level of love for this girl," the proud father wrote on Instagram on Wednesday. "You make me proud every day. It's scary when you think about how fast time flies....My little girl is 12 today WOOOOOOOW!!!!! Your name is exactly who you are 'Heaven Leigh Hart' (HEAVENLY) .....We are going to celebrate you & your day sweetie!!!! I love you....You will be daddy's little girl & my best friend forever!!!!"
Hart, who also has a 9-year-old son, Hendrix, recently dished to ET about the joys of watching his children grow up.
"As a dad, it's everything," Hart shared with Kevin Frazier during a visit to the Untouchable set. "I mean, you know, I'm over here struggling with my levels of cool now. [Hendrix] is not the little kid anymore. He's starting to understand how to do things on his own and he’s asking for certain things... It was definitely a proud moment for me to see and realize that he is growing up to be a young version of me."