That is a really hard question. It goes to the core of your self and your artistic sense, versus trusting advice of someone with more experience. If a judge/teacher/fan/critic/whatever? wants you to play their interpretation, I tend to say, you can play it however you want but I play it how I want to. I will listen to someone who is sincere about there advice, but if they are just trying to promote their own agenda, then I politely nod and smile, then do what I want
Chopincrazy23 kind of hit the nail on the head on why competitions suck. If all you care about is following the herd, and winning the top sheep award, then try and pander to what you think each judge or competition is looking for. If you want to be an artist, trust your own judgement. That doesn't mean blindly or stubbornly sticking to a losing path, but constantly evaluating your playing, and working hard to define what you think is a good performance and interpretation.