The relationships we have with other people provide us with an enormous potential in relation to our emotional stability, however these same interpersonal relationships expose us to other problems that are also candidates to be faced under a perspective in which asymmetries are not allowed and we can defend our interests.
When we are exposed to the way others act, there is no other solution than to set limits to these relationships and to put our values first and make them prevail above all else.
All of the above is also related to the fact that the affected people can receive psychological help to promote their values and interests without being influenced by other people, which is why when we are sure that some interpersonal relationship affects us, we have no other way but to set limits to the forms of interaction, especially those that have a direct impact.
There is a very visible example of putting a limit ourselves when we interact with another person who suddenly is abusing our friendship, is that many times we say yes to a person under a request that although it affects us we give acceptance when deep inside we do not want to accept it, so I think that this is the limit of an interpersonal relationship, ie the limit is when we say yes even though inside we want to say no.