USTA team challenge matches

So i have a challenge match tomorrow that i'm pretty nervous about despite it being a team member and not some unknown player. I think it stems from the fact it's a team member so you feel kind of like you have to play more safe and be respectful... but being a male, we have huge egos that get in the way and usually ends up being just a regular match. Anyhow, i'm bit nervous about that but also nervous about performance because i sometimes just go blank and sit like deer in a headlight.... and since tennis is about focus and movement (and many other attributes) i really need to get over this hurdle or reduce this.... Constant gut check it seems..... When you are nervous you suck (quote from movie from balls of fury)..

I get more upset about myself then anything else when it comes to matches... Or sometimes even make excuses and say the other player played cheap or get upset if i don't like the guy personally ... but usually i blame myself... I should really relax and not take this sport so serious at times but one teammate in the past mentioned i should... "practice like its a match and play your match like a practice" which i've done most of my matches.. but realizing that most tennis players are relaxed fun focused people and they kind of get upset or give me the evil look that i'm taking this little too seriously!! But we know most motives of the tennis competitors out there are the same right?

Hopefully i play tomorrows match and have fun and don't leave with my head down (win, lose or draw) and just not blank out.. (i really don't like that..).. Maybe i play too much which is why i blank out...hmmm