Break yo' elbows on bench

One of the most common issues plaguing people on the bench is an inability to properly engage the triceps on the eccentric portion of the motion resulting in the inability to properly extend and lockout. The fix for this issue is simple. Break at your damn elbows.
As the weight gets progressively heavier people will inevitably rely on their primary movers in an attempt to overcome the load. In the bench press this is your chest and lats. The result of this reliance is a curved bar path while simultaneously flaring the elbows. The triceps are not properly loaded and the bar ends up hitting a wall a couple inches of the chest.
Instead try this. On your warm ups practice initiating the movement with breaking at your elbows no differently than you might break at your knees to begin the squat. Then, once the break has begun, focus on keeping the weight balanced over the tip of your elbow where your triceps connect with your ulna. What you will find is that the positive may feel harder at first as you acclimate to this adjustment, however, you will surely find additionally drive where you normally would have just hit a wall on the bench. Rely on the triceps and your bench press will thank you for it.