My proposals, under high level programming something derived from:

- thou shall learn how to use the wheel, thou shell not reimplement it instead

- best software barely satisfies task it was made for

- antipasta statement: no lasignas, no spaghetti and no raviolli

- the code forming interface will be at max 20% of actual code written

- no interface will be designed to solve all humanity problems for next millenia

I think that all those were hugest pains I had within 23+ years of development.

What were yours?