I know as a GM I'm probably not the best. I tend to not be the best at group motivations, but as a player I'm much better at driving a story and playing the role.

I also, as a GM, tend to over think to the point where I can burn myself out, and some of my rps have failed due to my own efforts. Wont say too much more, but I do know that I change drastically if I'm running the show. Not to mention I get stressed and paranoid in case I get some people that start up issues. :\

tldr: I change when I'm a GM and don't actually enjoy the management side of things.