Projection is a subconscious defence mechanism. It's the tendency to disown the qualities we don’t like about ourselves and attributing them to others. It happens in relationships when we blame others for old or present hurts. Projection holds power when we have the inability to see it. Especially, if there is a high level of intensity, it creates a strong urge to blame.
In relationships, projection hurts our partners by casting them into a false role, and placing your feelings onto them. Its power lies in our inability to see it. Identifying and communicating that your responses are a projection of past relationship incidences, childhood experiences or your own personal issues, is an incredibly courageous act. It provides insight that may be needed to stop your relationship becoming stuck. Projection keeps us from understanding the true source of our pain and being able to tackle it. Blaming your partner keeps you from discovering your part in the dynamic, and it results in an entanglement. To tackle your projections this first thing I suggest is; when you get triggered, stay with the feelings.  Secondly try to ask yourself (in regards to emotions or negative thoughts); "who owns this? Is it mine? Or is it theirs?" This can help give a hand to identifying if this is a projection or the reality. Owning and communicating them is brave and courageous.