We've all heard of the learning curve. I'm starting to think there is such a thing as the Forgetting Curve. As soon as I improve one thing, something else I used to do well goes off. Lately, it is the serve. I used to get the occasional ace. Then that stopped, and I'd get the occasional service winner. Then that stopped, and lately I can't seem to bother anyone with my serve and doubles partners have started asking what's wrong. Extra practice with a hopper only gave me a sore shoulder. Ten minutes at the end of a lesson with a pro, and I think my serve is back. The problem was something I learned over a year ago: slow everything down to enable better racquet acceleration. To which I say: Oh, yeah. Right. I knew that. So how come it took time with a pro to get me to do what I already know how to do? What, if anything, will help me retain things I used to do well while I hone other skills? It's not lack of practice with the serve, that's for sure. How am I ever going to move forward if every new thing I learn pushes an old thing out of my head? Please tell me this problem is universal. I have a sick feeling it is probably just me who has this problem. I'm starting to think I will always have to have lessons because something will always be going off.