Keep up the hard work. It may take a while, but watch out when your whole game starts clicking.
I remember being in your spot. I just came back to tennis after a long break. Couldn't win a match. Kept at it and a few moths later I crushed a few opponents that used to beat me and drive me nuts.
I'd say don't put the emphasis on winning. You can't control winning, focus on playing well and playing your best. How you play is the one thing you usually can control. Putting to much pressure to win tonight may derail the whole thing.
If you have a problem closing out a lead, IIRC from Winning Ugly, just pretend you're behind and play like you have to catch up.
Ludacris: My chick bad! Tell me if you seen her. She always brings the racket like Venus and Serena!