when do you finally find the bottom?

I keep thinking I have hit bottom, but each day another stumbling block arises and I go down again. Tomorrow is my birthday. A year ago I left on my birthday, escaped the violience for a new life. The new life has not been easy. I have lost so much. The stumbling block that I thought I could climb I could not. I am still fighting the cancer fight with no resourses, each day I stress if I will have enough money to just buy the things I took for granted like food and gas. Tomorrow is my birthday. I had hopes that the gift I would recieve would be time with my daughters...I guess I am getting that , was told to come over at 5 to 8. Like an appointment. My heart aches.....I seem I can't find happiness.