Can you distract yourself? Is there something else you like to do? If you've already ingested the meth, how do you intend to cope when it wears off?
If I were you I'd make silly but definite plans. Hot cocoa and moping over a jigsaw puzzle, or water and hiking in the closest nature preserve. Do some concrete thing. Call someone you know and don't tell them what's wrong, but just ask them how they're doing. Go outside and stare at strangers. It can be good for perspective. You should decide what you are going to do next.
