The life guard rule states that if the person you try to save is pulling you down and you realize you are both going to drown, then the right thing to do is to escape from that person and let them drown while saving yourself. If you stay, there are two deaths. If you leave, there is one death.
This is a great guiding principle for life in general. Do your best to help others, but if you’re going to die trying, do not die trying.
“If it’s you drown or us both drown then it’s you drown.”