How can I learn to trust people again after years of behind-the-back betrayals?

I have been dealing with a problem that seems unsolvable. I met a Muslim man who blatantly lied to me about being married. Somehow this man has pitted my family, friends, employers, and strangers against me. I did nothing to this man. This has been going on for at least ten years, if not longer. All the actions have been done behind my back by other people, including my family. It has been a situation I would consider of great betrayal. My trust has been shattered, for the most part. You have no idea what this man and my family has done to my life. I am and have been for a long time on the streets. I have tried to move forward to no avail. I have always been an ambitious person and passionate about life. I have a college education and I owned a business. But I did grow up in a dysfunctional alcoholic family and was also married to an alcoholic. After studying Objectivism for a short time, it all makes sense, but I am not sure how to implement it, in this situation. People can really make you crazy and confused and it all stems from altruism. It has been hard not to lose my convictions, but I have made it this far. I don't want to be mad or angry anymore. I want to get my life back, but I just don't know where my errors in thinking and action are. How can I do that?