Capable may mean capacity - the ocean is big enough, my arms are strong enough, my Grandma is rich enough. I know that I am capable because I can finish the job, cross the finish line, carry on - all without being extinguished or consumed.

Capable may mean competence - I have spent the hours practicing, the years learning, the night in contemplation, my life in experiencing. I know that I am capable because I've been here before, when things were even worse, and I did not fail.

Capable may mean caring - the outcome matters, the end result counts, the difference between failure and success is a gulf that cannot be bridged. I know that I am capable because I recognize the costs of not succeeding, and I am not willing to pay.

Capable may mean courage. I'm pretty sure that I can't, but I will try anyway. I know that I am at least capable of that, if nothing else, and will give all I have.