I would get it if I had the opening riff to a song or a big solo when I played guitar. What helped me was focusing on the tone and making each not sound beautiful. If I did that I couldn't worry about getting it wrong, my focus was each note. Now it's funny, I'll get a little on edge the day of, before I load my gear or anything. I also get a little cranky if my wife makes a big dinner or nice meal. I just can't switch off and enjoy dinner. Once the car is loaded and I'm in process, all is well. During set up, I'm relaxed and happy, can't wait for that first song.