I don't know what to do anymore

I think I need help....

I no longer know what I'm doing and I don't know what I can do but I need to do something. I'm either feeling completely numb or I want to cry and continue crying until I drowned myself in tears but I can't. My bestfriend is going through a lot and I just feel powerless when I can't help (which is all the time) and she is the only person I feel comfortable talking to (usually) but lately I just feel I can't; that I can't burden her with my issues because of what she is dealing with but I really really need to talk to someone because I'm being eaten alive. So then I don't know what to do. What can I do?

This is really just me venting how I feel and what I'm thinking without feeling like I'm burdening people...it kinda helps