It sounds like co-dependacy issues from growing up in a dis functional family. I'd suggest a finding a therapist who can help you realize that you can not find the solution though others. No boyfriend, father or sister or another person can save you. They can offer quite support and a listening ear, but they will need you to stop expecting them to tell you what to do. Tell them what you need is for them to listen, only. Only you can do that. The right therapist can help you find your own strength without you becoming dependent on them.