I always found the fieldwork most satisfying in careers in both botany and geology. Whether that was collecting mud samples along the length of a river in outback New Guinea, collecting mineral samples in an Australian desert, or collecting seeds on a mountain in Nepal, it may not have been as safe or easy as office work, but it was far more productive and useful. As a retired botany lecturer who still had a mortgage so had to earn a living, I parlayed into fulltime work several things I had used to enjoy doing in term breaks or between formal job contracts, and now make most of my living by teaching on-the-ground classes in bushcraft, wilderness survival, wild food foraging, camp cooking, food gardening and home brewing. Add to that selling in the local Farmers Market (which I helped to start) the produce of my garden: fruits, flowers, herbs, vegetables, perfume plants and dye plants - and I can earn a moderate living and feel useful while I do so!