One missed repetition should not receive authority over the next one.

A missed repetition has no natural power over the next one. Yesterday does not reach forward. Any authority it seems to have was granted by you, usually in the form of a story about momentum being broken or the whole thing being ruined now.

Treat each repetition as available on its own terms, regardless of what came before it. The question is only whether you will do this one. That framing removes most of the weight from a bad stretch.