I'll give an example...
A few days ago I was doing some positive thinking/visualization (that's what all the "success" books tell you that you should do lol) and I was visualizing money in my bank account...lots of money....and then it dawned on me:
Why is positive thinking so hard for us to accept?
Why is it that we have to "force" ourselves to think positive in the first place? Why isn't it just a natural reaction? Why are we prone to be pessimistic instead of being optimistic?