Bruce Lee was all about taking the established ideas as a starting point and then adapting and developing your own ideas, rather than blindly following established rules with no further thought.
So I guess your ex is trying to tell you to make up your own mind and choices, and not just blindly follow a set of rules.
However, I'd argue that by getting rid of toxic people, you are in fact doing what is best for you, and going against the conventions that you have to forgive people or put up with abuse because they are "family" or any of the other excuses used as to why the people who should love you the most treat you the worst, and think it's okay to do and that you have to put up with it.
So I guess your ex is trying to tell you to make up your own mind and choices, and not just blindly follow a set of rules.
However, I'd argue that by getting rid of toxic people, you are in fact doing what is best for you, and going against the conventions that you have to forgive people or put up with abuse because they are "family" or any of the other excuses used as to why the people who should love you the most treat you the worst, and think it's okay to do and that you have to put up with it.