Pick anything. Write about that.
How you chose your office chair...and why you wish you hadn't.
Why you decided to write anything at all in the first place.
Your bucket list, what you want to be sure to do or try before you die.
Your greatest goal accomplished.
Your greatest goal yet to be accomplished.
The ten greatest things your parents ever did for you.
The ten worst things your relationships ever did to you.
The possibilitiies are endless.