Determining the next step

I think I've figured out the reason I feel so out of sorts lately.

After getting through treatment for a deadly disease, I feel the need to do something great. But I can't figure out what that something should be.

Is this about advancing my career? Writing a book? Writing a screenplay for the movie/sitcom/next big thing my friends and I talk about?

Is it about letting go of some of this career stuff and refocusing who I am as a parent?

Is it about attaining the goal of running my first half-marathon? If so, what happens after that?

Or is it about doing something I haven't thought of yet, but which will seem like the obvious choice once I realize what that something is?

As much as I realize I have to figure this out for myself, part of me wants someone else to make the decision for me.