I'm sure glad I already know everything and don't need to practice.
Seriously all that stuff is sort of fun, except looking for jobs. I hate that.
I sort of pride myself on doing requests, so every time I get a request that I don't know, I try to learn it. I can't every time, but most of the time I can learn it well enough. It's a lot different these days. Find the lyrics and chords online, go to Youtube and see what it is supposed to sound like. Listen, play along with it, correct the chords that I found online, find the right tempo and a style that will work. Figure out what key is best for me. Then practice it. Play it for my wife. She don't pull any punches.
DonM