Yes, first, you have to like what you're doing. If you don't like what you're doing, you wont get anywhere. If the graphics don't motivate you, the money wont help motivate you either. Let me assure you, I'm not the best, great, or even good in some aspects, but the thing that makes me keep going is that I like what I'm doing, and I have fun, and I want to get better.
Download Photoshop CS2, and mess around with it a bit. It's actually pretty easy to get started, and tutorials about all of the tools will help too. Just don't give up if something doesn't turn out the way you want, just keep trying.