25 years. Frequent DMing for the past 11.
Some things I do well, and some I'm improving. I have realized recently that I need to reduce the time I spend working on DMing RPGs and increase the time I spend playing at DMing RPGs.
Other realizations. Minis help with descriptions. Unlined paper keeps us from playing checkers. Different games keep me thinking about different, hopefully better, ways to play the game. Considering what each of us enjoys in the game helps keep the focus on enjoying the game. It's just a game.