I'm the stereotypical "type B" person. Passive, comfortable. I'm a pretty smart guy so my life is pretty good (65k income a year [can buy anything I pretty much want], work 24 hours [self employed])

But my type B personality is my limiting factor. I'm not driven enough to succeed at my goals. The fact that I'm "decently" successful in fact is a double edged sword because it allows me to stay in my comfort zone.

Has anyone made a change successfully? I can do it for a few days at a time but I quickly revert back to my old self.