Doubt can be good because it means you want to improve: you want to be a better person, a better pla... - Stan Wawrinka Quotes from quotely.org
Doubt can be good because it means you want to improve: you want to be a better person, a better player. But it's also good not to have too many doubts on the court. by Stan Wawrinka

Doubt can be good because it means you want to improve: you want to be a better person, a better player. But it's also good not to have too many doubts on the court.

Stan Wawrinka