If you pray hard for something, and then won't take it when it comes your way, yeah, the god in question is likely to be irritated. Affirmations are less sensitive, since it's just you, but if you get in the habit of affirming something in words and then rejecting it in real life, that's going to mess you over. The moral to this story? Don't use metaphysical methods to try to get something unless you're sure you really want it, and will take it when offered.