In the process of it right now.....Honestly whats driving it for me is frustration......however......
Move away. You can experience new things without having to change yourself too much in a new city. It doesn't have to be across the country but a fresh start might be what you need.
I don't think you can fully reinvent yourself in your current location. Which is why im hoping to move within the next year.
In any location it gets to a point where as much as youd like to reinvent yourself, your fate in that location becomes written in stone. And outside of a drastic change in your life (which for most people seems to consist of either becoming a parent or a status changing job), there's nothing much you can do to shake your old self.