A Selfish Argument for Making the World a Better Place - Egoistic Altruism

Egoism includes a lot of content, for example, I satisfy vanity, make oneself happy, also calculate egoism. But I'm probably happy because I helped one person, I saved another person, which is also typical altruism.
In fact, there is no clear distinction and boundary between the two, but people mistakenly believe that things always have "black and white" two sides after the wrong understanding of "dialectical". That's why I had this weird idea.
The key is to look at the problem from a personal point of view, as I continue with the previous example
It's true that WHAT I'm doing is both selfish and altruistic, but maybe there's another patient that I could have treated earlier, but I delayed because I was treating this patient, and I'm not doing that to his detriment?
The relationship here is simply your Angle.
There are different results from where you look, but that doesn't mean there are too many and too few results.
Because the actual useful results and impact, it depends on you to choose the most typical, that is, your own relevant content to consider eno