For me, playing the guitar is the one thing that takes me away from the world. Whenever I need to get out of my head and into a different dimension I pick up my guitar and play. I'm not necessarily amazing at guitar, but just hearing myself create a song by just sitting there and playing a few different chords is amazing.
I'm in college and barely have time to sit and play as much as I want to, but I still play a lot and especially when I'm stressed. Music has always been calming for me and I've played multiple instruments in my life. However, the guitar is a different experience than piano or a drum set. The feel of the strings and knowing that it's you creating that sound makes me feel like I'm in the clouds.
There are so many times in my life that have been so stressful and playing guitar, even if it's off beat or just random shredding, i feel on top of the world.