Try to take advantage of possible Sapir Whorf effects by constructing your own language to use for thinking in. I got this idea after finding a link here to this New York Times article which has several examples of such effects.
Random brainstorming on potential things to consider including:
It would probably be best to do this after learning at least one other language that is quite different from your native language. Also, keeping ways words can be wrong in mind is likely a good idea.
This would likely also have the same effects as thinking in any foreign language
I may or may not actually try this after I've learned Korean sufficiently well.
Incidentally, learning a new language isn't required for this.
One can, for example, adopt the habit of saying "I want X to work" or "I expect X to work" or "I would be happier if X worked" or "I would be happier if I expected X to work" instead of "X should work" while continuing to speak English.
Put differently: the habit of setting trigger-points around certain words ("should," "think", "want", "can", :will", etc.) to ensure that I actually know what I'm saying when I say them is useful.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.