Granted. But the process starts chronologically with your first thought and works its way up. Assuming you manage to avoid all the freudian horrors, you're still treated to prison time after your early middle school fantasies suddenly come true. And god help you if you ever created any poorly written fanfic. Or poorly drawn dinosaurs. Or anything involving explosives.
Assuming you make it up to date, either you've already died horribly, committed suicide, ardently wished none of this had ever happened (thus making it true and nullifying it), or have such a boring imagination that you can't even use the power.
I wish to successfully genocide an entire species of my choosing.