From a tactical perspective, there is also lots to learn depending on your game style, the surface, the conditions, the opponents game styles, and so forth. Again your coach will be your best judge of your areas of improvement in this category. It will also assist greatly if this is backed up by video and game statistics. It is always a great motivation to be able to see and track your success.
I find many athletes do not acknowledge their improvements along the way as they are always looking for what else to improve. You need to take stock along the journey too and pat yourself on the back for how far you have come and this is much easier to do when you have the visual proof in the form of statistics or video footage. Seeing is believing. Also it is a great reinforcement to your subconscious brain that you are always learning and improving, which of course all helps build the foundations of your beliefs.