So you are suggesting one should pay for coaching and try to change the way he plays when he is winning?
One should understand that coaches are actually struggling themselves, otherwise they would be playing poker instead of coaching others how to play...
This couldn't be further from the truth
While there are such cases, this is surely not a norm and I know plenty of coaches who are crushing high stakes and working with other players.
To answer the question, I am a bit amazed that everyone says play play play and then play some more, but if you just keep playing you will hardly learn much without analyzing your mistakes.
So while coaching is expensive, there are a number of great training programs out there you can choose from.
Also, what you can do yourself is review your sessions, and I mean not the hand that you busted your tournament, but the entire MTT play since you see everything in a different light when not playing.