Don’t let your gaze wander, and certainly don’t press with your eyes closed, no matter how hard you’re struggling through a particular rep. Focal point contributes mightily toward balance, and the press is very balance-dependent.
Mistake #6: Awful Knees
Don’t let your knees bend when pressing. This is the press, not the push press, and if your knees bend, the lift doesn’t count. To fix this issue, flex your quads before starting the rep and keep them flexed during the entire rep. You can cue yourself to “pull your kneecaps up” or simply tell yourself to “keep your knees tight,” but don’t let your knees get loose when pressing.