The ego is the single biggest obstruction to the achievement of anything. Between-ness is the act of acting without ego. You act, but you are not the actor. You do things, but you are not the doer--and you know you are not the doer. It's the ability to hold the head at a dead standstill in order to effect certain changes. You desire the change, but you do not care if it comes to pass.
Source: After the Absolute: Real Life Adventures With a Backwoods Buddha
Contributed by: Steph