How does Roger Federer keep winning Slams from this point onwards? 3 poInts where he needs improvement.

What does Federer need to do to win more Slams?
#1 Off court training. He needs now to put in more training and less point play on a daily basis. Working on speed and footwork to keep that edge. Without this he will not be able to play his game.He needs to tone all muscle groups to where he has never had them before. This is the most important component of his game he will have to work on in order to stay with the top 5 ranked players over the next 3-4 years. Fitness and footwork is everything in tennis.

#2 Mental attitude. He needs to ask himself how much does he want this,titles, and decide to focus 100% on tennis after his family. If he doesn't commit 100% he will fall away slowly. He is so mentally tough but this time of his life will test him. How hungry will he be to work hard. If he does it will keep him at the top of the game.

#3 Serve. Although one of the best serves out there as far as placement and effectiveness he needs to hit with less spin at times as he gets older. He then will have more pace on his serve along with his excellent placement. This will save energy in the long run and end the points earlier.