Sometimes I trick my mind into thinking I will die if I don't do a certain thing. This can be a good motivator, but can lead to unnecessary anxiety if not used in moderation. Also, it only works as well as you trick yourself into believing it. I've noticed a marked increase in my abilities to focus and in my quickness when I use this method during a game or something similar. I figure I am leveraging the high value placed on survival which has been cultivated via evolution, using it to enhance my mental acuity and awareness such that I might 'survive'.