Part 1
People who waste their lives in chronic complaint over how badly they feel, or how unfairly life has treated them, think nothing of wasting your life along with their own. There is only one way to treat those who insist that you should treasure their trash as they do: throw them out of your life!
Part 2
Learn to say "NO" to anything within you that would convince you that your only alternative -- given your current "situation" -- is to ache over it.