If you let go of right and wrong life becomes much easier to deal with, and much happier.
I’m not saying that you never shun certain behaviors, but if you understand the fluidity of morality, you see that in most situations you don’t have to get worked up anymore over petty things. You can simply change your beliefs, in real time, to fit the needs of a situation.
For example, if someone is using a cell phone at dinner, you can chose to flip out about how rude it is. Or, you can simply be happy that that person is happy and have a nice dinner. It’s entirely up to you. You’re not obligated to flip out. You’re not obligated to be upset. You can chose to be happy too.