Having common sense is learning to walk away from situations that threaten your peace of mind, your self-respect, your values, your morals, or your self-worth. Common sense is sound, practical judgment that’s usually required when dealing with certain people or circumstances you need to walk away from. Use your common sense to ensure your mental sanity and protect your emotional well-being. Sometimes, stepping away is the best way to preserve your inner peace and maintain a healthy, balanced life.