I'm still learning to cook with the foods I have available, and I'm not a natural, which means I don't instinctively understand how to cook something or what flavors will blend well. So when I am trying to create a recipe, or trying to tweak an existing one? The end is not always a pretty sight. I'd say it works out about as often as it fails spectacularly.
But right now, with my extreme food limitations, ruining my food isn't a minor, if frustrating, experience. It hurts to screw up on a recipe these days, because the loss has a lot more of an impact.