LifeLessons

Should the new decision be based on past decisions? Past results? Amount of time already invested (sunk costs)?

From the song 'Please Stay' by The Drifters:

Don't go, please stay
Don't go, please stay

If I got on my knees and I pleaded with you
Not to go but to stay in my arms
Would you walk out the door like you did once before?
Or would this time be different, would you stay?

http://www.youtube.com/watch?v=NairS2nGEEw