Well?

Do I commit or not? Do I register and take on the challenge of the marathon or just give it up as yet another wacky idea that I've considered? I am torn. I really want to do something that makes me feel powerful and in control. Do I have the time to commit to this? I'm afraid if I wait to long to register that it will be closed and I'll be out of luck. Of course, I could register and if I don't complete the training I'll be out $100. What to do... Do I have it in me to complete this task? Am I strong enough?