After a disastrous match I got to work on my serve and actually figured out my problem with it. Since then I've served about 4 times and used the new technique and having been serving incredible! Against my coach I had multiple aces and no double faults. Another shot I wanted to improve was my 2 handed backhand and I worked on it almost exclusively a couple times and feel like Djokovic out there with it. When I played a doubles match both shots were clicking and I was playing great until I was serving to stay in the set. Then 3 double faults in that game to lose the set. The next set I double faulted twice out of the 1st 3 points in a game until I realized I was making the same mistake I did before I worked on it. So I forced myself to make the change and I was able to serve well again. It almost seems like whack-a-mole where my serve went off when I started working on my backhand. I feel like an idiot for serving the old way when I practiced the change over and over and know exactly what to do. Should I keep focusing on just the serve until I get the old motion out of my system completely?