It's often hard to let go something , but really welcoming the "next" is essential for progress . Don't dwell on the past; instead, focus your attention toward what's ahead . This doesn't mean you dismiss https://www.youtube.com/watch?v=N4FBtGP7zSs&list=OLAK5uy_kaqfjK_D00GAl1qeI8R1YmIE36j-RCLho&index=1