Advice please. I suffer from depressing and suicide and I feel so tired.?

I've been dealing with depression for about fours years now and I feel like I'm reaching the end of my limits. I have at least one serous thought of suicide a week. I'm not talking about "oh I'll just off myself" that sort of suicide thoughts. I'm talking abut what I do, where and what I can use. and I'm just exhausted. I'm just so tried of it all. I'm tired of feeling like this. I'm tired to getting help. I'm tired of people looking out for me and being concerned. I'm just so tired. The scariest thing is that if I did try to kill my self, I don't think I can find the energy to do it.I was curled up on my couch the whole. I didn't go to classes, leave my room and only wanted to easy mints. That's all I had in me. I just want to shut myself up and away.

I don't know what I'm asking of. there's not much you really can do but anything please.