Whenever I feel like that, I just skip to a different trick and come back to it. I do my best to learn them in order, but I skip one every once in a while. I can do all the master tricks on this site except “double Iron whip” because I couldn’t [I skipped] the trick “Iron whip.” I also cannot do over under boing e boing, Iron whip, hook, suicide 1.5, double suicide, and Triangle laceration. And yet, I can do almost every master level trick on this site.
So my advice: If your stuck on something, you can just skip it and come back to it later, or you can just create a thread and ask for help on it. I think I speak on behalf of everyone on these forums when I say “We would love to help you out, thats why we’re here.”
I also caught that you were having trouble with “The Matrix.” This thread might help you if your having trouble with the “rolls”: http://yoyoexpert.com/forums/index.php/topic,23040.msg231658.html#msg231658
Good luck, and just keep practicing!