There is one problem in me - not knowing how. In 2013, I came across the phrase, "learn to lose people like ten pennies dropped out of your pocket. Yes, there were. Yes, not anymore." That phrase has been sitting firmly in my head ever since and quite often I realize it when people suddenly disappear.
Sincerity, as I've written about it before, has long been out of favor, rather more suspect. It is, after all, everyone's desire/unwillingness that is entitled to respect. To lose, to forget... no, not to remember. I guess my difficulty is that I can't really define for myself this process... action.
Wishing and trying to prove your sincerity and "I'm good" is a pointless waste of time and devaluing yourself. Why do people come back once they have decided to leave?
It's really skill, character and willpower not to change your mind. They say: "when you leave, leave"... and if you show up from now on, you are worthless.