By Aditya Shukla - creator of the brain-based guitar method
Your fingers take a lot of brain-space, and your guitar brain connection starts with muscle memory.
Guitarists think in shapes more often than not. Focus on the shapes created by your fingers.
Visuals can distract you from noticing the sound. So keep your eyes closed and practice.
Your posture determines how your guitar literally connects to your body. Improve posture.
Everything you play is distilled into a "beat". That beat is your template to "feel" your music.
Learn sound physics to understand intervals and harmonics. They build an intuition.
Practice planning what you'll do next on the guitar before you execute it. This develops musical thinking.
Hum your guitar parts for understanding rhythm, intervals, and tone. Voice processes the data from your guitar.
-Aditya Shukla (guitarist + psychologist)