If there is something you've been meaning to do, but haven't done because you keep coming up with excuses, you are probably a perfectionist (like me).
Perfectionism will be the death of any world changing and great idea you have.
Don't wait until it's perfect. Take imperfect action. Do it now, because if you don't, you may never get started. And it's so much easier to improve on something you'd done, then something you haven't done yet.