The common denominator in all of your failed relationships is you, and it's important to take responsibility for that. Only by examining and addressing what is unresolved within yourself can you break the pattern and create healthy relationships in the future.
JP Sears emphasizes the importance of getting complete with the first 20 years of your life to break cycles and attract better relationships. When you understand that everyone is just a human being, it becomes easier to detach from personal conflicts.