Most guitar players tend too tense up on the first few,
songs or try to apply to much pressure to the notes or
like trying to squeeze the neck to death.(Think light touch)!
My warm up is the first 2 songs we play.
I try to practice 1 hour a day.
I,ve been playing 40 years and i'm still doing 2 to 3 shows
aweek plus teaching guitar 1 or 2 days aweek plus working
on computers and selling them.
Hope this helps sombody(Keep picking but enjoy plus love
what your doing, other hobbies also are good .
You can think to much guitar and get in a rut.
Mark
yours truly Mark Toman