I find myself guilty of giving over ambitious timelines even when I try to take that into account.

Half of these are not about software engineering and just general management principles.

Pure gold :) I'm missing one though; "You can never underestimate an end user.".

TANSTAAFL was always one of my favorites - there ain't no such thing as a free lunch

I just wish if this was a requirement to get a job. Everyone needs to know this.

I think it would be cool to have these shown at random as my phone’s “screensaver”

Oh dear, not again: https://lawsofsoftwareengineering.com/laws/brooks-law/

This one belongs to history books, not to the list of contemporary best practices.

Nice site, but missing the Law of Conservation of Misery.

I like it, but this could have been a tab delimited text file.

This is really good and comprehensive, thanks for sharing!