Not Happy

I don't know where to even begin with myself. I am 28, a single mother of two health, wonderful children, but I am not happy with my life. I have been suffering from depression for the last four years of my life. Nothing seems to help. I was put on meds, and now my parents want me off of them. I have tried counciling and writing. Now I am going to try the world of blogging. Anything to keep me from doing the one thing that would leave my kids in the hands of their every other weekend, if I am in the mood father. Why is life so hard?