Learn everything you know in all keys. — Joe Pass
This goes for everything in Life. Also, got to stay happy!
Take a listen to some of the music I have played over the years.
There is myself playing, some jam session nights at Gilly Correia’s and more.
Been playing guitar since I was 9 yrs old. 
Was a member of the local musicians union, played with many talented musicians who are no longer with us, and some that still are. Still play for myself. 
Enjoy most music, but the Great American Songbook is the best. Brazilian and Jazz are also tops.