I completely sympathize with your situation and welcome you to SR. The following statement is said with love...I am an alcoholic and my "issues" do not stem from childhood. I had loving parents and every opportunity in the world. Please do not generalize in that way, we are all different. I also know that I am not too broken to fix.
That being said I hope you can find a path to detach yourself and your children from the negative situation in which you find yourself. You will find lots of love and support on SR. You may want to check out the friends and family forum. Best of luck to you and your family!