I live with many regrets, I think most of us do. What I have found though is that you should learn from them yes, but not let them control our lives. Example: I regret moving back in with my family knowing how they would treat me, but stupid me still went ahead and did it anyways. It bothers me everyday, but hey we all make mistakes in our life. Can't let it weigh you down, learn from it, try to find solutions to the problems you face which can be difficult if you are stuck in certain situations, but still possible in the future. Just hold on to the hope that things will get better over time.