Intersperse your efforts to catch pickier fish, like trout, with fishing for more aggressive "easier' fish like panfish. They call it fishing, but it is nice to be catching.
If you are learning fly fishing to add to your survival skill arsenal, consider what kind of fish your survival efforts might target and be sure to spend some time going after them.
You might not want to spend too much time with purists who may have the elevated nose syndrome, but check them out to see what they have to teach. It does not matter to the fish if you use a refined trout technique on bluegill.