Drop everything

I once told colleagues that I rarely establish very close friendships, because I know that nothing is permanent and it's difficult to uproot oneself when circumstances require dropping everything.  I've gone through phases of attachment, but through the years I've developed a faster detachment mechanism.  The trick is simple: constantly think about that object or person or whatever it is that has your attention until you reach the point where you tell yourself "okay, this was great...time to move on."

It's healthy insensitivity.