I had a problem once that i couldn't change my surroundings. I thought i could do it in my dream at that time, but probably deep inside of me i was thinking "this might not work". And i beleve that is your enemy.

My solution was saying to myself "don't try to do this, just do it", and beleve me your mind processes this completely different. Never had problems since then with changing my surroundings! So this might also work for your problem. Just know u can do it if u really want to.