Buddy, in your case the saying applies - a suicide is a permanent solution to a temporary problem. Do not commit suicide under any circumstances. You have grown up - you are supporting your family with your earnings, and that puts you in a position of power. It is just that you do not yourself realize that you have that power, and are afraid to wield it.

Let me backtrack a bit - why are you on this site? It is a mental health support site, so I suspect that you might have a mental illness, and what I and other people can do on here to support you, give you advice, guide you, etc., depends upon whether you have mental illness. Also, do you have a regular doctor you can talk to?