Know that you have a right to personal boundaries. Every person has the right to instill healthy boundaries with each of their relationships and must learn how to instill these boundaries and how to take responsibility for how you allow others to treat you. Your boundaries act as healthy filters permitting what is acceptable in your life and what is not. If you don't have boundaries that protect and define you, you tend to derive your sense of worth from others. To avoid this situation, I teach and work with individuals on how to set clear and decisive limits so you are comfortable and other people in your life will respect them and reinforce them.
Many people have the tendency to be ' people pleasers' and have a difficult time saying "NO" to someone when they should or need to. This manipulated behavior ends up being destructive and leads to huge resentment for one's self and for the people who invade their personal space or healthy boundaries.