I hear this all the time, and in its typical meaning I think it's terrible advice.
If you care about honesty, or self-respect, or your partner knowing you and how you think -- caving in to everything and avoiding conflict at all costs is the opposite of what you should do.
If you rephrase it as "Don't sweat the small stuff" or "Don't be petty and stubborn about things that don't matter," then it's perfectly reasonable.
If you care about honesty, or self-respect, or your partner knowing you and how you think -- caving in to everything and avoiding conflict at all costs is the opposite of what you should do.
If you rephrase it as "Don't sweat the small stuff" or "Don't be petty and stubborn about things that don't matter," then it's perfectly reasonable.