How we cite our quotes: All quotations are from Requiem for a Dream.
Quote #7
HARRY: Was I supposed to watch you push off and not go myself? Don't put it all on me, okay?
Recreational drugs are so called because they're often done in groups. Harry demonstrates how difficult it is to refrain from using when you are around people who use. See the line from before where he doesn't want to use, but Ty convinces him to. Harry's friends are enablers.