'i can't go on'.

i'm utterly exhausted. my legs hurt, my arms hurt, my stomach hurt... i have a migraine. i can't think right. i can't focus. i can't breathe! i'm breaking down. i'm wallowing in self pity... sheesh. i don't know if i have it to go on, i know i might kill myself just doing so but... i don't wanna give up.

wanting and needing? which?