Long ago I settled for satisfaction in work only, discarding amount of money and I don't think I could be happier with the jobs I did so far. Granted I get enough money so that I don't really have to care about it. But for me once the threshold of enough is covered I fail to see why I would pursue more. Sure you can always go bigger and more and faster but does that kind of motivation really make you happy or more motivated? Or does it just lead to again wanting bigger and more? I also really feel like the OP should ask him/herself questions like these instead of blindly assuming big money is one of the answers in dealing with lack of motivation.