I do truss rod adjustments myself, it's not that complicated but it's an exercise in due care; excessive adjustments could lead to irreversible neck damage.

For those of us who do neck adjustments ourselves, here's a tip: How do you determine, other than resorting to the use of capo at the first fret & pressing the 14th fret of your guitar while checking relief, your neck has straightened/ moved after turning the wrench? You use a tuner.

Before you turn that wrench, make sure your guitar is in tune. Proceed to tighten/ loosen the neck accordingly (depending on the relief issue of your guitar's neck). Wait a little while (5min or so) & re-check your tuning- it should be a little flat/ sharp, indicating the occurrence of neck movements. If your tuner fails to register any changes, it would mean the truss rod is not in working order so stop any neck rectifications immediately.