You are correct--if you want to win at the 7.0 mxed level and go national tennis is job #1!--Quit your day job, hang out at the courts with a card-board sign requesting donations to advance your goals of winning--you don't need a day job to be a successful national level player--it's called being a "tennis bum". Live out of your car, lots of players do this. Tennis is cheap, lots of balls left in the waste bins. Free food from food banks, free water abounds at drinking fountains, bring a gallon plastic jug to take advantage of this resource. Sleeping is free but only you can do this for yourself--learn to sleep sitting up.Hi all-just wanted to know. If you want to get better and win matches on consistent basis you have to make this a full time 2nd job don’t you along with nutrition water and lots of sleep.