I can't really make myself stick to self imposed challenges. Figuring out the most efficient way to win within a ruleset is just a thing that comes very natural to me . It's kind of a mental fight between me and the game designers. Can s/he create a set of rules that I can't easily break to pieces or not? If I can, I usually end up doing it.

In this regard, I usually do not count programming errors, but design errors. Such as giving me access to aqualung before the gold saucer, and making the enemy casting it weak enough for me to survive its attacks at that point with no grinding.