Free time is absolutely the most valuable currency. If you can practice an instigative hobby and augment that hobby with the good money you make, then you've got it made. I have a bloody ton of hobbies and I can't wait to get out of work to work on my own stuff.
Seeing my days/life in two parts as stability (day job) being fuel for my hobby has helped me deal with my identity crisis when I got completely turned off from coding. It was also my hobby so I was always coding, but once I lost that I didn't know what to do and I hated my job. Once I saw it as fuel, no matter what day job I have, is now in context of a hobby.