If I think about it I wouldn’t call my self a master of any of the languages/apps I use for everything I do. If you asked me off the top of my head how do you do this, I could give you the logic, but not the syntax.
But then on the other hand, if someone gave me a project and said finish this by this, and make it do this, I could do it.
Possibly the only language that I could say I have mastered or somewhat mastered, is C++, and that mostly because I’ve taken a class in it.