Pro tip: My first attempt at wiring a 3-way switch in my own house was a total mess.
Honestly, after two days of frustration, I finally bought a voltage tester and realized I had the travelers reversed. Has anyone else had a simple tool completely change a job for them?
Ever notice how the right tool doesn't just fix the job, it changes how you see the problem? Like using a stud finder and realizing why that shelf always felt wrong, or a level showing a whole cabinet is off. You stop guessing and finally see what's actually there. It turns a fight with a thing into just... fixing it.