NEW DELHI, Feb. 19 -- Fresh from winning his fourth Laureus World Sportsman of the Year Award on Monday, Serbian tennis great Novak Djokovic set a higher goal of staying mentally healthy and balanced over his chase for Grand Slams and world No. 1 position in the future.

After coming back from an elbow surgery, Djokovic triumphed at the Wimbledon and the US Open in 2018. He went on to claim the Australian Open title this year, and currently sit No. 1 at the ATP ranking.

Djokovic admitted that the last 12 months have been quite "transformational." "I've been 12 months ago on the surgery table. I hope that was the last surgery that I've ever had. But at the same time, I was really pleased with the way surgery went, because it allowed me to b...