Schedule
I worked about an hour in the morning, and an hour at lunch time each day for about a week.
I enjoyed one evening of level design in a notebook.

Success

Reason why you think you succeeded or not
well.. I definitely did not spend too much energy for this. I have a game that is barely playable, but I think gets across the point I hoped it would.

General comments
This is based a little bit on my own experiences, and I am kind of feeling down at the moment.