Don't panic - that's not an existential question, I promise!
When you become a teacher, one of the most difficult things to learn is that everybody learns a different way. Activities, games and ideas that worked in one class may fail spectacularly in another class. Or maybe you'll find a way to make them more relevant and interesting.
This is especially true if students are aware of their learning styles. Not everyone learns the same way; not every trick and every piece of advice works equally well for everyone! I'm not an expert on the topic, so I won't talk in detail about the theory, but if you'd like to learn more - or even if you'd just like to get an idea of what your strengths are - take a look at the link below. The language is a little advanced, but it's worth the trouble.