This page is inspired by the Impossible List of fellow blogger Thomas Frank, which you can read about here.
Meditate five days in a row (This may not sound impossible, but it took me over 15 month after installing my meditation app to beat three days. I only recently achieved and have not repeated four days in a row.)
Do three full sun salutations three days in a row
Hike two miles on a weekend
Send my first article to a peer-reviewed journal