For example, it is your responsibility to keep your home clean. It is not our responsibility to keep your friend's home clean. Another example, is that you are responsible for your emotions, but it is not your job to make other people happy. Boundaries are knowing what you are supposed to do for yourself and not thinking it is your job to do the same for others. When you look at the boundaries you have set in your relationships, you will quickly see that they affect almost every part of life.