"...Most amateurs dread tension, envisioning it as a Sword of Damocles hanging over their head. However, tension can serve you well if you have faith in it: 1) It tortures your opponent as much as it tortures you! 2) It's confusing since there are so many things going on. And, as we know, confusion breeds errors. 3) If you are the only one that can safely (or advantageously) break the tension, then let it linger and torment the guy on the other side of the table. Such tension really is your friend!..."
cited from chess.com