I agree wholeheartedly with your belief that micromastery is great for our brains and our self-confidence. My current challenges and projects are connected with Medium. I was hesitant to wade again into the pool of creative writing, but that was easy — the wading into, not necessarily standing upright (i.e., successful) in that pool. But now I’m trying to tackle Mailchimp vs. Convertkit, etc., to be able to grow and communicate with those on my email list. I’m from an era where we used IBM Selectrics, then went to computers for unput. Using CSV or CVS, etc. to communicate is definitely requiring so micro-learning from me! Come on, micromastery!