Well, I will have to write many paragraphs to fully understand your questions. Let me tell you that I am highly unsuccessul as a piano player. I cannot play mu

Well, I will have to write many paragraphs to fully understand your questions. Let me tell you that I am highly unsuccessul as a piano player. I cannot play much more than a few simple "pieces". Becaue I am highly irregular. And apart from work and reading SICP, I don't do everything everyday. I read SICP 7 days a week. But work only five. No Deep Learning on Sundays. On Saturdays, no work, only personal learning, reading papers, attending study groups, etc. Actually I can work for no more than five hours a day- proper, hard work, "deep work" if I may. I want to extend that to 8/10. That is my main motivation behind meditation. I am better than most in concentrating during learning and work. I just want that to last for longer hours. I studied Electronics and Computer Architecture (from the Mano book mostly) before, so I don't find nand2tetris very challenging. It is fairly challenging at times, but not the hardest thing that I do. It's more fun than challenge. SICP is challenging at times. But I spend time with it very regularly, say 1-2 hours a day. I have learned from my experiences that, when you are learning something fundamental, new, it is best to learn it over many days and months rather than bouts of short sprints. So, I am regular with it, but don't spend long hours. Being with a highly career focused partner helps a lot, too. I discussed my time management techniques here- https://news.ycombinator.com/item?id=27356883 https://news.ycombinator.com/item?id=27356883 I spend 30 or so minutes every day reading novels, poetry or about the culture and history of the Bengali people. I also exercise regularly. I like to swim, but pools are closed.