Celtics point guard Marcus Smart talks about his progress throughout his rookie season and trying to keep the momentum going into the playoffs.

"Every rookie has that wall that they hit," Smart said. "Thank god mine wasn't as long as most rookies. I was able to bounce back and try to stay focused and keep my confidence up throughout that wall."

"It's true, you know, you always gotta stay locked in, especially at the end of the game, because you never know when you're number will be called," he said.

Or, when the ball gets haphazardly dealt to you at the end of a game -- like when Smart nailed a buzzer-beater against Toronto.

"You just gotta stay focused and stay in the moment," he said of late-game situation. "Those big shots and moments in those games where everybody's confidence is up -- it translates into the next game. That's all we're just trying to do is just keep that momentum going into the next game."

To hear all of his thoughts, be sure to watch the video above.