JonLaw, you might like to read about Barbara Sher's scanner concept. http://www.amazon.com/gp/product/15...524712-8792631?n=507846&s=books&v=glance

When you take your enjoyment from the act of learning and exploring curiousity, it is a bit of its own ends and means. Skill accumulation is a wonderful hobby/way of life and glimmers of cross-over knowledge and interconnectedness have additional rewards. Good times, good times.