Future you is going to look back at this week and say thanks for not tapping out.

Decisions made in a hard week get repaid to a person you cannot see yet. Right now the cost is entirely yours and the benefit belongs to somebody several months out, which is exactly why quitting sounds so reasonable at eleven at night. That later version of you is real and inherits whatever you do now. They will not remember the discomfort, only whether you stopped.

When you are close to giving up, shorten the horizon rather than the commitment. Get to Friday. Decide then, rested, instead of deciding now at the worst possible hour.