There are so many parallels in a lot of spiritual paths as well with this, like the minimalism, the deconstruction work, all the stuff. I realized that whenever my life feels unsatisfying, it's because i'm not satisfying three of those: happy, smart and useful. You can do something that's useful for others and might be smart, but if you're not happy doing it, then it's kind of like the oil in the machine,. Like the machine starts to break down if it doesn't have the oil of happiness. Are you familiar with the japanese concept of ikigai? No, i've heard the word but i never found out what it means