My break is a lot different than "any other shot" that I execute. After positioning the CB exactly where I want it...
I start by standing probably six feet behind the CB, then walk into the line, trying to keep my head/eyes/"vision center" in line as much as possible. From here on out, I try not to move my head. If I'm not lined up, I stand up, turn away, and start over.
I continue by loosely lining up the CB towards the rack, adjusting my bridge, stance, and the position of my feet. Only then do I begin to actually aim the CB at the rack.
I spend plenty of time, stroking slowly, with my eyes only on the CB, maybe even start to raise my torso up a bit to double check my "active" alignment, as I know my body will move when I pull the trigger. When my body moves, I want to make sure my head moves towards the rack, not off to the side.
Next, I focus my eyes intently on the head ball of the rack, while continuing to move the cue back and forth.
Then I do a few "test" strokes, as if I'm tricking my body into thinking that THIS stroke is THE ONE, but then stop each time, at the last moment before making contact.
Then I execute a few more practice strokes while moving my eyes back and forth between the rack and the CB, ending with a near stop, verifying that the tip is at my intended contact point on the CB.
When that looks and feels good, I then lock in and trust the tip position and cue alignment and focus ONLY on the head ball. I pretend it is the only ball on the table, and I'm going to smack it so straight and fast, the foot rail is going to crack, and the cue ball is going to dribble forward (I find that a touch of follow helps the cue ball "stick" to the middle of the table after it hops back).
I pull back that final time, pause briefly, then all at once, rotate my hips slightly and strike the CB as FAST (not "HARD") as possible, with my eyes glued to the head ball.
I hope this helps. I'll shoot a little video if you'd like to see my technique and eye movements. I know many others break better than I, but this works well for me. I average around 23 mph, according to the Predator Break Speed app.
Rack em!
-Blake