Thinking about some of the things I've learned that were not easy, but once I understood them or learned how to do them, it made a world of difference...
Some have been purely skill-related, like finally grasping Photoshop ten years ago with my non-analytical brain after three different courses and years of frustration watching so many others take it on and run with it right away, thinking I'd never get it and when I did it was like a revelation how powerful and enjoyable this program is.
Or having to take a whole summer when I was a kid learning how to ride a bicycle, being so awkward physically to begin with and seeing my younger sister getting on a two-wheeler and shoot down the street after a few tries; how incredible it was when I could finally do this.
And then other things I've learned that were more about my personality, like going from being so shy and awkward socially to enjoying social gatherings and even initiating social contact, to even enjoying being proactive in my life and not settling on being some sort of doormat.
Learning how children 7 and under think. I am a kids magician and figuring out that it's not the trick that brings them pleasure, but the personality of the magician. My magic tricks go wrong and the kiddies come to the rescue and actually make the magic happen. I empower them and of course I give them kudos. Learning to remember their names also took time (Harry Lorayne has a memory book) and I meet all the kids before a show and call them by name. It took almost ten years to develop my style of being silly, goofy and entertaining.
International Morse Code. You have to graduate 22WPM Receiving and 18WPM Sending. Every now and then I may still make a woman cry with my inspiration. Indirectly something a wrote cost me a divorce... if that aint Mastering?
I'm shy at social gatherings. I tend to avoid them.