[Siddhartha]

Don’t be too hard on yourself. Like any other endeavor, the art of teaching and a thorough knowledge of the science behind it take time and dedication to develop. And if you talk to anyone (who is being honest with themselves) who has achieved a great level of mastery in any field, they will tell you that you are always improving, learning more and re-learning things you thought you knew in light of new data and experience.

As long as you, as a teacher are actively taking steps to develop, you’re fine.