> -- No

This is one thing I need to learn to say. I have been doing lots of stuff other devs want and hating myself for not being able to say no.

SICP made me fall in love with Lisp even more. It taught me how powerful the tandem of function and closure can be.

Yup this was one of my aha moment too.

> Similarly, not trying to learn everything was a big deal.

This is one of my recent decision. Previously I would jump to every shiny frameworks and try to learn every fancy programming languages. This drained my energy so much I had to stop doing it. Instead I have decided to learn ubiquitous tools e.g math, algorithms and data structures, etc.

> good type systems, immutability, compile type instead of runtime, never overwork and sleep the best I can

I agree with you on this.