Level 1: You miss that thing.
Level 2: You think of it everyday.
Level 3: You are finding something to replace it.
Level 4: You try to convince yourself that you have it.
Level 5: You hypnotized yourself that you are having it.. but your heart has given up.
Level 6: You already found a replacement for it.
p/s: Sorry I do not have a Richter Scale for it.