WRITE CODE THAT YOU CAN UNDERSTAND WHEN YOU GET PAGED AT 2AM

Summary from the TLDR Web Dev newsletter

Clever code is difficult to understand. “Clever code” can stem from valuing complex code over readability, premature abstraction, or over-adherence to the DRY (Don't Repeat Yourself) principle. Devs should instead try to write simple code that their future selves can easily understand.