That shouldn't be hard. First.. think of where you could, or hope to be in 17 years, based on how you have progressed so far in the last 15 years. I could easily come up with a few possible outcomes for myself, as to where I would be in 2020.
1. Dead and rotting
2. Depressed and doing nothing
3. Married, happy, with a family
Now... These are up to me, and based on the last 15 years of my life, I really don't know which would happen. Depression, if I were to allow it to continue to dominate me, would bring me to status 1. While option 2 could be brought about by means of recent happenings, in which I go back and forth thru depression. Lastly, my current mood, and self outlook could bring me to option 3, happy and normal.