Practicing guitar alone is hours of sounding awful for a few seconds of sounding exactly like you.

Skill has a long ugly middle. The stretch where you can hear what you are aiming at and cannot hit it is the longest one, and it is also the part nobody films. Those hours are not the price of the good seconds, they are where the good seconds come from. The version that sounds like you exists only because of everything that did not.

Give one thing forty minutes alone this week with nobody listening. Let it sound bad without treating that as evidence. Count the small moments where it clicked instead of the ones where it did not.