tldr; I failed a web class once, then practically taught people actionscript. Now i love JavaScript/Node.js because flash is icky.
-full story more or less-
I failed my first web design class in college due to not having enough time to actually study(I worked 2 jobs and took 6 classes like a moron). Anyway took a flash class prior to retaking my web class, I picked up on action script really quickly. As in I ended up helping other students better than the instructor was(she hadn't touched flash in like 5 years and was just an adjunct instructor). I got hooked with action script so I started teaching myself JavaScript, knocked the web class out like nothing after that and loved it.