I think I needed these types of reminders right now:

Every line of code you write is a potential bug. Do not write any line of code unless you absolutely need it right now and your program will suffer for the lack of it. [...] Do not write abstraction layers you don’t need right now. If an optimization will add any complexity whatsoever, even a subtraction, resist it.

Source: https://www.teamten.com/lawrence/writings/every_line_is_a_potential_bug.html