Time and Money Invested in Your Brain in 20 21

Every year i invest more time and more money into my brain, and very year, i am seeing my results go up, up, up. So ball park, how much time and money did you invest in your brain in 20 21? You can notate it by day, or week, or month or year. It doesn't matter. Whatever makes the most sense to you. But i kind of get a ball park. What were the good things that happened? The parts of it that were so connected and loving and full of gratitude and fun? Like, what was the best part of 20 21?