You want to lead a healthy life? Stop trying to draw water from an empty well. Your fishing for love and support from someone who has never given you any in the past, continues to fail you, and will never have anything for you. They say insanity is repeating the same behavior and expecting different results. By that definition, what you're doing is insane. Step #1: Stop treating your mother like a mother. She's not behaving maternally; treat her like anyone else.
A healthy life will also not involve being stuck in the same place for twelve years. Your eHelp read: "Hi, I lost my father when I was fifteen. I am 27 now." That's the most important thing you need to say? You are letting an event (a significant event without a doubt, but a single event no less) define who you are. It has defined who you are, how you interact with the world, for twelve years. How you present yourself is how you define yourself. Stop conceiving of yourself as "Bob, 27 years living, twelve without a father." Start thinking about yourself as "Bob, self-sufficient 27 year old, who has overcome adversity to get where he is now."
Step #2: Like with your mother in Step #1, let go of your father. You're letting a single event, one man and his absence, dictate how you interact with life. You are more than a semi-orphaned teenager just as soon as you believe you are.
Healthy living does not look for on the outside what must first come from the inside. You want warmth and love from your mother, from women, from anywhere, but you aren't willing to give it to yourself. You're depressed, avoiding responsibility, and angry. Those are all internal qualities. They are you imposing those things on yourself. If you loved yourself, others would want to love you too.
Step #3: Develop an internal locus of control. You can only control you. No one wants to love someone who is incapable of love. Love yourself and prove to the world that you are capable of love.
You're nearly thirty now. Your life is approaching the halfway point. It's time to strike out on your own now and overcome the trials of your childhood.