I came across a great story about an ex-con who was having trouble finding work after his release from prison. He was not getting calls back after disclosing his criminal history, and decided to start his own business based on the fitness regiment he developed while in prison.
Most interestingly, the founder makes an effort to hire other former inmates for his company. Founding a business may not be right for everyone, but it's good to know that there are people out there who will relate to your situation and are willing to help give others a fresh start.
Here's an article about the founder and company: http://www.nytimes.com/2016/04/10/nyregion/at-a-gym-in-manhattan-fitness-tips-from-ex-convicts.html