A moment well lived can change the past and the future.

How can someone further develop the mastery of living a self-disciplined life outside of day-to-day contact with a master? Is there a link between self-discipline and devotion?

The self-disciplined journey of a master requires three things:

Spiritual mastery requires a significant commitment. There is really no acceptable option other than mastery. This is a lifelong commitment (implemented one step at a time) with the alternative being to live and die enslaved. Contemplate this at least once a week. Make a regular time, like every Sunday night, for instance.