One thing I've noticed about our human inclination is how some people are so focused on what someone else wasn't to them, and live in the past carrying around dead bones and yet they are also usually the ones that don't recognize what's in front of them or just how blessed they really are. I mean how long do you live in the past and let it rob you of current or future blessing? It's also very narcissistic as far as being so centered on yourself, and as long as you are looking to the well of human flesh and blood to fill you...Newsflash: that well is dry in terms of deriving any lasting worth or confidence. You can only build someone up so much and you can't be Jesus to them. You can't maintain someone else's happiness or personhood or worth. And usually you will be discarded easily so guard your heart like proverbs 4:23 talks about. It's the word for guarding or tending to a garden. People that are so centered on themselves and the past or on who wasn't what to them can't have room enough in their hearts to care about others and usually are never satisfied. They are robbed of contentment and have nothing to give. It really is a thief like Unforgiveness when we won't look to The Lord to deal with our past or present.
Psalm 105:4 Look to the LORD and his strength; seek his face always.