I think this is the problem with trying to strike deals with God: we've all done it, but not one of us is really sure how to proceed, or even (most times) recognize for sure what is going on and what we should do. Part of the problem with such deals is that we are usually vague; probably unintentionally, but we are vague nonetheless. For example, in your case you seem to have made the deal that you were willing to give things up, if only God would grant you something. But now that you have the something, you don't know whether your being willing to give things up implies that you must give things up. Generally, I don't think that God works that way. However, I have read in many places that God will honor or accept a sacrifice or good intention. So, if I were you, I'd just make some firm commitments, and then stick to them. For example, "I won't spend more than X dollars a year on my PSP games," and things like that. Make it concrete, and make it so that there is a definate line in the sand, so to speak, so that you will know when you have done something you said you wouldn't. But just remember that in the end, God gives us what is best for us, regardless of what we give up or accept in an attempt to win his favor.
