That advice make sense, but... it's not so simple. At all.

- When dealing with customers, we are working: in work, we know we're supposed to give a performance, not being ourselves.

- With a spouse, we hope we could just let go and be ourselves. When our partner says "I love you", we assume it means "I love you the way you are". Besides, in our frantic lives we always have to carry a mask and perform a role; when we come home, we desperately need to stop faking it and just be who we are.

That's one big reason why we give both our best and our worst in our intimate relationships: only there we reveal our true selves, and those selves aren't always nice and kind.