The first thing I would do is lose my ego (self-concern).
The second thing I would do is congratulate myself on #1.
The third thing I would do is be comfortable with the fact that I am without ego -- no self-concern, so no limitation -- pure love, unlimited and unconditional generosity -- no separation from others, no blame and an inability ever again to be a victim.
All of that from one change. A change like that would change the universe.