Cody Lundin talked about having a Wayne's World-style "Party On!" mentality in "98.6 Degrees". No matter what obstacle was facing you, he wrote, you've just got to have a go-get-'em "Party On" attitude and just keep hoofing forward.
I admit though, that's a LOT easier said than done. And I doubt I could give a war-cry of "Party On!" if, say, I've just broken my arm. I'd probably cry out a stream of expletives first.
I can NEVER go wrong with the things my late stepfather always taught me, though, which include the following...
Keep things clean and in working order, including your tools, your work area, and yourself.
Keep your eyes open and be aware of what's going on.
Everything you do is a learning experience. The more information you take and keep in your brain, the better off you are.
Go with what your gut tells you when making an important decision. If one of the choices feels wrong, it most likely is.