Let’s take resentment. This is a common mental attachment most of us have to deal with some time or other. And it really is an attachment. If you think about the last time you were resentful, you probably thought you had every right and every good reason to feel that way, and it didn’t occur to you to give it up. Most likely you were completely unaware how your attachment to this attitude is quite destructive.
Let’s say someone else got the promotion you thought you deserved. Maybe you became resentful, and felt something like: It isn’t fair. That person isn’t as good as I am. I should have that job, not her. And maybe you even thought:, I hope this person fails, because they don’t deserve it. Then you allowed these thoughts to roll around in your mind with lots of strong feeling attached, and you probably felt very justified because you felt you were so right.
The fact is, the feeling of resentment is totally unnecessary, and by feeling it, you put yourself in your own prison. You take away your ability to create your own good.