In my own experience, I had to finally stop competing with myself, as well as others. I had to stop trying to do well to please my sensei and make him proud of me. I was left with just doing the best I could at all times. Obviously some days are better than others, but just do the best in this instant that you can.
Constantly comparing makes us all weaker because we are fearful that we may be on the losing end of the comparison. Or the opposite, but still the same is always feeling like we're better.
"Fear is the mind killer."