He’s got a fondness for acting in theatre. So when David Harbor began to play, he fell in love with the theatre and moved to New York City to make it big. On Off Camera, Harbor informed Sam Jones he “was a great early failure,” but he continued to achieve his ambitions despite the difficulties. At the age of 24, Harbour came to Broadway in 1999 with a role in ‘The Rainmaker,’ which led him to be cast in ‘The Invention of Love.’ Although he had a theatre career, Harbor still received modest assignments that did not pay the bills. So he turned to TV shows and Hollywood to achieve the aims.
David Harbor overcame addiction. When he was younger, David Harbour was candid about his addiction difficulties. During his early twenties, he told Esquire about drinking regularly, “I’ve had the party life. I haven’t been then.” He continued to get worse with his drink till Harbor felt like things were out of control. Then, he began his conduct and his life. He spoke of the humility of the individuals he knew in the world of drinks and how good it felt for people in recovery to be polite to him. He also stated that while drinking, he was a “terrible man” and how sobriety provided him with the opportunity to mend his relationship. Harbor was 24 years old when he decided to get sober and stuck to the plan. 
Bipolar disorder was diagnosed. David Harbor was diagnosed with bipolar disorder one year after becoming sober. He talked openly on Marc Maron’s WTF podcast for the first time. “I was 25, and I had a manic episode actually,” Maron said in Harbour. “I’ve been diagnosed with being bipolar.” While he had always romanticised this concept of a mental asylum, “it simply ends up being sorry and smells like s* *.” He told how the diagnosis led him into institutionalisation. Harbor told NPR that the way he controlled his ailment was part of his whole life acting. He said he continues to take medications, and psychoanalysis has been found to enhance his stability considerably.
