It is usually recommended to start early if you want to learn an instrument, but it's never too late.
Have you been studying an instrument as an adult?
If so which one and did you teach yourself or did you take lessons?
Was there an instrument that you already knew how to play and that helped you with a new one later on?
How would you weigh theory vs practice?
Anecdotes and recommendations welcome!
Let's see if you guys can motivate me to pick up that neglected mandolin and give it another try