When your only tool is a hammer

Photo of a hammer and a screw
The idiom when your only tool is a hammer, everything looks like a nail means that people tend to fall back to familiar solutions or past perspectives, even if they don't suit the current problem.
It means that you should broaden your thinking and look at different tools.

Are we really still using the procedure from the 1990s? Oh well, I guess if your only tool is a hammer ...