Kyrie Irving made his season debut on the court Sunday, after announcing directly on his Twitter account he’d return to action.

But getting back to the game after injuring his kneecap in Game 1 of the 2015 NBA Finals was no easy task. It took a lot of training—both physically and mentally—to suit up and play on the NBA stage once again. In the video above, the Cavs guard shared some insight as to what the process was like for him.