Bitterness is something that can affect anybody. The strong winds of life can make us feel so down. This happens when we do not let go of some things. For example, our inability to forgive some specific moments in our lives, whether it was caused by us or others. This is a road to bitterness. As someone who had almost been lead down that road, I can say we should all consider it as a sin.
Bitterness sucks away life. It steals any joy left and replaces anything meaningful with grief. It makes us jealous, vengeful, sad and definitely not our higher self. For people who want to have the most quality experience of life, bitterness should be avoided. When thoughts that drive us to such emotions come, we should remember the choice of joy is ours. We cannot control a situation but we can control our response to that situation. And our response is what matters the most.