I make a little goal every day and work toward achieving it - even if it's the smallest little thing.

On those days when you don't want to get up, I think, I'm going to get through my entire practice without saying how tired I am or I try not to complain just because I was in a bad mood when I woke up. Even if it's not perfect and I slip up, I can catch myself and make myself of aware of where my mental space is at and move on.

Setting a goal, accomplishing it, and feeling good about yourself can help build confidence and perseverance.

Madison Keys Quotes