This is where self esteem and being honest about yourself really come into play.
Where do you excel? If the answer is "nowhere," then obviously this is not true or you would not be a doctor.
If a doc tells you not to copy and paste the PE everyday, then either you self-flagellate yourself to depression or you can tell yourself, "that makes sense, the physical exam may differ on a day to day basis."
There should also be an ability to differentiate a well-meaning attending whom is strict, teaches well, and offers constructive criticism, with an attending whom just criticizes because he/she is being an ass. The first person teaches, the second one treats everyone like crap. Both can make you feel like an idiot, but in the first scenario it is because of you, and in the second it is because of the other person (and you).
Confirmation bias.
A: "You look good today."
B: "Do I? I usually don't." B dismisses the positive remark later.
A: "Can you make sure to order labs? You forgot to yesterday."
B: B thinks, "I. AM. A. FORGETFUL. IDIOT! I always thought I was an idiot and now here's the proof!"