Being faithful in a job you can’t stand is still faithfulness. Maybe the purest kind.

Doing something well when you enjoy it proves very little, because the enjoyment is doing half the work. A job you dislike strips that out and leaves only the decision to do it properly anyway. That is where reliability gets built, in shifts you resent, for customers who do not notice. Nobody can tell the difference from outside, which is exactly the point.

On your next bad shift, pick one standard and hold it for the whole thing. Wipe the counter properly, answer politely, finish on time. Then go home and let it be over, rather than carrying it all evening.