There are second thoughts happening each time you act.
There is hesitation, and from that hesitation or gap, you can go backward or forward. Changing the flow of karma happens in that gap. So the gap is very useful.
It is in the gap that you give birth to a new life.
Chögyam Trungpa Rinpoche, The Truth of Suffering and the Path of Liberation
Mindfulbalance 
It is that hesitation that we stop impulsive & reactive responses that could have tremendous negative consequences (think road rage). Thanks for sharing, Karl.