"Try" is one of those tricky words, isn't it? "Just try harder." "Try to study harder and you'll get it." Or my favorite: "Try to relax." What do those sorts of things mean?
My most meaningful encounters with "try" are with physical exertion, mainly exercise. When you hit the wall with an exercise the overwhelming inclination is to stop. However, when somebody says "Give me two more" or "Drive it through" you engage your inner "try." Then mind, nerves, and muscle fully engage together to do something you can't do.
I did check out the etymology, for what it's worth.