Being steeped in the process of learning and exploring keeps me from becoming too nervous. Partly it's about not getting bored.
To leave in search of yourself, of your real needs, is easier when you don't have to justify yourself to anyone, when there are not too many people bestowing you their attention.
I used to suffer from a lot of regret while touring. Regret at having to leave certain places, people and situations, or just a beautiful day.

