Your feelings, emotions, and expressions thereof make other people uncomfortable. That's it. Essentially these three phrases above (and many more) are designed to help the person you are being vulnerable to escape your emotions which they are not willing to deal with. It has nothing to do with you as a person. Nothing to do with your being weak, or emotionally unstable. No, it has to do with other people not wanting to confront their own emotions by having to deal with yours.
If you believe that you must "save" someone, then the universe will send you someone who needs to be saved. If you feel as though you are not good enough, the universe will send you people and situations that reinforce this idea that you are not good enough. And if you truly believe that you are not deserving of love, then the law of attraction will bring unto you, those who prove that you are correct. BUT! If you believe you are worthy of love, and that you ARE good enough, all the universe will conspire to give you what you need.
Do As I Say Not As I Do: This is the ultimate sign of an abuser. An emotional abuser can say anything to you, and behave any way they want BUT if you repeat that behavior towards THEM...you might as well have started world war three. They will absolutely lose their minds. Emotional abusers can dish it but they can't take it.