this body means nothing to me at all

i drive away the people i love. they lose interest. i destroy myself. all i feel is pain all the time and when i’m happy its naive because it never lasts. ill never last in this world. im 18 now, but i feel like a child still. i cant manage responsibility. i let people down. they’re sick of me. i’m a waste. i build myself up just to crash and burn in the worst way at the very last second. and this fucking pain, why do i hurt so much? i’ve tried so many medications, they don’t seem to work. my intrusive thoughts come, and now with even more intensity. i thought i’d gotten better, that i’d improved, but the truth is i’ve remained the exact same. instead, i’ve just distracted myself with going out and wasting time with “friends” who don’t care for me at all. and now my girlfriend is being weird and ignoring me even though shes active and posting and when i try to confront her shes all defensive and then ignores me even harder and my fucking OCD won’t let me stop thinking for a second. i have to remind myself that she loves me, even though it doesn’t seem that way. i thought i’d finally get valued when i got into this relationship, but the truth is, just like everything else, relationships are temporary highs. everyone will let you down and you will let them down. being alone is what i need to do. i need to shut off my emotions. i need to be a machine. this fucking body is a shell. this body means nothing to me at all.