When coworkers slack, match your standard, not theirs. Their laziness isn’t going on your reference.

Standards drift downward in groups because nobody wants to be the only one still trying. The trouble is that the group is temporary and your habits are not, and none of other people’s choices transfer onto your record when you leave. You end up carrying the lowered standard into the next place, where it will cost you something real.

Decide what good looks like for your part and hold it regardless of what is happening around you. Do not lecture anyone about it. Let the difference be visible in the work rather than in the commentary.