kinda personal...I know.
But when to carry your guitar with you when you sit on the ivory throne.
When you have dreams of chord shapes and progressions; then you get up in the middle of the night to try them out.
When your in church and your not playing, but for some reason you keep looking over at your guitar.
When you go to your local grocery store and the cashier says "Hey, I know you.........you da guitar player".
When any number more that zero and less than 8 has to do with a chord degree.
When your door bell rings, or someone knocks on your door, or you drop a plate on the floor, or you knock something over the create a sound............Then you strangely wonder.........What key was that sound in?