100 days of…WHAT?

I kept seeing the giveit100.com mentioned on…where? Facebook, probably. Finally I looked into it.
The idea is you make a ten second video every day of you doing your chosen activity and upload it to their website.
In one of the articles, a woman was telling how she chose doing push-ups. Day one she could barely hoist herself up off the floor but at the end of 100 days she was doing push-ups like nobody’s business, yada yada.
Well, that sounded pretty good to me so I signed up to give 100 days to some project or activity too.
That was two weeks ago.
I haven’t started yet because, despite encouraging emails from someone associated with the program to ‘just pick something”, I haven’t been able to.
Writing? Clean eating? Walking? Hula hooping? Gratitude?
I was paralyzed in the face of endless choices.
Until today. While i was out walking at the ocean today, the thought of what to do appeared fully formed in my mind.