I do not know when or if I have ever gotten a true hang of programming, but I truly felt like I got a hang on something when I made my games from the Game Development courses on CodeCombat:
 

Game Grove created by AnitaOlsen (to the left) and Game Dev 2 Final Project created by AnitaOlsen (to the right).
 

..and even more recently, I truly felt like I got a hang on something when I made my first ever visual novel with Sublime and Ren'Py!

"My very fist visual novel - it is awkward, it is too short, but it is made by me!"
 

But I think I can say one thing though, I know that I have come far and as you all know, practice makes perfect! ✨

When did you really get the hang of programming?