as title saying..how to overcome deep depression ??

I am 27 years old, my one kidney stopped working 3 years ago.due to high calcium in body my hairs started falling out , i leaved my studies and after a year an IT company company fired me  then i started working at home before few months my luck was so good in gambling but since a year i am looking for good business , but still i am fail  .

I am not posting this story for any donation

but these are reasons of my depression , i joined since community forum since few months ago and i feel this best to share there.