Eyes On Ball On Contact

I can't seem to keep my eyes on the ball on point of contact. I have to keep reminding myself to look at the ball all the time and when I forget, I seem to be looking at the net, oponent, the other side of the court, everywhere but the ball. Anyone has any tips on how to overcome this bad habit?

as a dril try closing your eyes at contact for a second then open to see where the ball has gone.THen you could stare at the contact point like Federer.