If you are sick and tired of re-reading Yes, but - the sabotage of self, here is a shorter version from The Big Moo.
How often do you say "yes, but"? At Sarah Lee, the top people walk around wearing white buttons with a big black slash through them. Those buttons prohibit anyone from saying the word "but".
What if you had to say "Yes, thanks!" or "Sure, how?" every time someone had a suggestion?