You cannot dig a hole in a different place by digging the same hole deeper

We had a very interesting lecture about creativity last week, which made me think a lot.

"You cannot dig a hole in a different place by digging the same hole deeper" (Edward de bono)
Literally, it's right. However, when I adapt the idea in to my work, it's just not alright. The problem is because I don't have the courage to abandon everything I've done thus far and start over again. I'd feel that it would be a complete waste while I don't even know what I'm going to start over will be good. But the funny thing is that whenever I'm forced to start over (like when I'm working on photoshop and accidentally flatten the whole things), it usually turns out to be good. But whenever I try to do a different approach, it seems that someone is saying "You won't be that lucky this time". It seems that everything is going in a circle, or it's like "I want to dig a hole in a different place but I cannot climb out of the hole I've just dug".

I've realized this problem a long time ago, but wasn't sure that what I thought was right. After this lecture, I think that I have more courage to sometimes abandon what I usually do and try a different approach.

What I'd like to do?

(typing the post for the second time, because for some stupid reasons, my previous post was all blank >_<)

I always have a clear idea what I like best in the design field: graphic design. It's not that I don't like other things, it's just that I can't make really good product in web design, sound or video. Designing web layout is fine for me, but making it a real website is something I don't want to, due the the difference between browser and security issue. Sound and video are nice and I usually have a lots of idea about these but hardly anything comes out right. It requires more equipments which I can't afford at home. One other reason is that they usually (if not always) require team work while I don't like team working. I prefer working alone with my own equipments, and graphic design simply satisfies my condition. Moreover, only in graphic design that I can stay really close to my motto: "keep it short and simple (because I can't make it long and complicated)".

In a less practical aspect, I've also wanted to work in the game industry. Not involving with the techinical stage, of course, but working on the base concept, for example: writing the main plot or designing battle system. Anyway, it's no longer my true goal any more but if I ever have a chance to work in the game industry, I'd definitely give it a try