I certainly don't lose any sleep if I lose a tennis match.
In tennis you move a lot. Golf you dont. In tennis, you can have a bad half-hour, but you cant in golf. You can lose the first set in tennis and still win.
He's a haircut and a forehand.
You have to focus on the process. You cannot be glued to the results.
My serve and my forehand I pretty much always had, but my backhand was a made backhand. I worked on it for years.
Tennis is not like other sports where the coach is hired by an independent entity, and that makes a huge difference in the dynamic.