Short and sweet and with a great intro to boot :D
The controls are very smooth, but collisions could use a little work (I was able to clip out by running up against a wall when it was rotating I think?). You might also consider having a warning, such as an exclamation mark pop-up before the negative thoughts appear, so the player will have a chance to dodge.
The ending was a bit of a let down, as no matter what I did I could only achieve world peace, but I assume you ran out of time when thinking of different endings. Still, it's nice to see you spent that extra time on giving us all a cool intro.
Nicely done!