There are a few basic skills that lots of developers stubbornly refuse to learn properly: - Regex - SQL (if you do some backend work) - CSS (if you do some f

There are a few basic skills that lots of developers stubbornly refuse to learn properly: - Regex - SQL (if you do some backend work) - CSS (if you do some frontend work) - Bash + basic CLI tools (vim, grep, find, sed, awk) - Git Really learning these makes your life sooo much easier.