I used to struggle with this a LOT, still get a bit nervous and try too hard when I play with low handicappers. I played in a GWGA 2 day tournament with a 6 handicapper (I was about a 15) this year. She wanted me to play several rounds with her first to get to know each other. Wow, was I ever intimidated. I played terrible the first two times with her because I was so nervous. I have now played many rounds with her as well as a lot more people who are a much better than me. It has really helped my mental game and my game in general. I love to watch people show me how it's done. You've received some great advice from others. Pace of play, good attitude and having fun is what it's about. Don't be too hard on yourself when your shots don't compare! It only makes it worse if you start thinking negative thoughts.