“Positive thinking” can certainly be overdone, but I think has a bit of a bad rap these days. There is something to the idea, if nothing more than the fact that the person who is optimistic is more likely to act.
Let’s say you are thinking about creating a web application; not just a toy, but something to base a business on. A startup, if you will. Alarm bells might go off in your head — everybody is doing that, you might think. The market is saturated. There are more “web applications” out there than you can shake a stick at.
All of which is true. I don’t doubt, also, that if you were to share your hypothetical web application startup with someone, their first response would be something similar to the thoughts expressed above.
Consider this, though: will there be more successful web applications? The answer is almost certainly yes. Will there be more multi-millionaires created by internet software startups? Again, there almost certainly will. No, not everyone with a web startup will be one, but some will.
Who will they be, the next round of successes? Well, you can guarantee who they won’t be: they won’t be those who are now saying, The market is too saturated. Everybody is doing that now. There’s too many web applications out there already, and none of them are getting rich…
This isn’t to say that I’m going to start a web startup, or that you should; the same reasoning applies to anything. You can’t win the game if you don’t show up.
Just a thought before I go on vacation. :)
I’ll be in Vancouver, BC, for a week, and this site will probably be pretty quiet for most of that time. But then, I don’t think you’ll run out of things to read on the internet in the meantime….

Good post. You should read “The T.A.D. Principle” - I think you would find it interesting.
I’d like to second the “good post” comment. I don’t think anyone can argue with your logic there. If you have a positivie attitude about something, you’re almost certainly going to act on it. Negative people, meanwhile, just sit around on bar stools complaining about everything!