1) Writing Code Without Planning
The Mistakes I Made As a Beginner Programmer
Samer Buna

0) Being Crystal Clear About The Business Need

This isn’t only important to the developer(s), but also the business entity making the request.

Clients are notorious for piling up a list of wants and in the end that noise misses the actual needs. Repeat after me :)

“Wants are not needs.”

The Five Why’s, if you’re not already familiar, is a great tool for gaining clarity.


p.s. FWIW, even seasoned vets too often jump in before the actual and true needs are defined.