Not really strategy, but more a mental thing.
This is for tournaments, I'm not really a cashgame player yet.
If you're not able to win (most don't as a beginner and loads never will) study, read,watch,ask,discuss,get experience, find out what you're doing wrong,get those leaks outof your game and so improve.
If you do win a big tournament however, do NOT think you are there and are the best player in the world.
I made that mistake myself.
As an absolute beginner (quote Bowie) I won kinda big prize and immediately thought I could be a pro.
I just didn't realize I just got very lucky and had (still have) to learn a lot.
Stay critical about your play, even if you win.
If we have patience and are open to info and suggestions from other people and if we are studying the game and our own play, we can be heroes (quote Bowie), NOT just for one day.
note, post a hand using a converter and you immediately can be HERO.