Petra Kvitova hopes to rediscover the form that saw her beat Serena Williams en route to winning the Madrid Open when she returns to action next year.
The Czech beat the world number one in straight sets in the semi-finals of the tournament in Spain in May, before overcoming Svetlana Kusnetsova in the final.
Despite not featuring on the court since the Fed Cup victory over Russia last month after struggling with mononucleosis, the 25-year-old wants to build on the positives for the coming year.
"It was a strange season but one with plenty of highlights," Kvitova told BBC Sport.
"There was Madrid, where I beat Serena - that was a great moment for me - and went on to win the title, and also the US Open was good for me this year as I reached the quarter-finals.
"I'd never really played that well in New York and I finally had some good results. I hope to have more success there; I'm trying every year and despite it being difficult conditions for me, I now know I can play well there if I am healthy.
"The last time I hit a ball in competition was at the Fed Cup final five weeks ago, but after resuming fitness training earlier this month I was back on the practice court in my home town of Prostejov on December 16.
"I'm healthy right now and practising again, injury free, but we'll see. Let's hope it stays like this and 2016 can be a successful year."