What is the word to describe an action taken for ones self?

I was wondering what is the best way to describe an action taken for one's self without a negative, or positive connotation behind it?

Such as in the action of someone recusing themselves from an activity, the action of recusing is neutral.

I know that an action against one's self that is negative, such as suicide could be described as self-destructive.

Each word or phrase seems to have a +/- connotation one way or another: 'self-interest' comes off as selfish; 'in one's best interest' suggests someone else may be shorted or ignored; 'self-preservation' implies that there's a threat, and if you're self-preserving in the absence of a threat, that's neurotic; 'meaningless' definitely has a negative connotation; 'recusing' can be strategic and useful, or noble and fair, but is used in a legal setting where the law forces you to stand aside. The only truly neutral word here is 'reflexive,' which I think of as a type of verb that has a different form in Spanish, for example, meaning not 'reacted by reflex' but something like the person does this thing to him/herself -- we rarely consider this in English because our verb use is the same in both cases. But I don't think you were looking for an answer in the grammatical sense. The word that I feel best about is 'sustenance' - whether it's food, or hydration, or yoga, or psychotherapy, you take action, are engaged in activities that sustain you across many different domains. I note that as I try to describe its neutrality I am 'selling' it with positive attributes. What does that tell me? Should I balance it with negatives; would that make it neutral? I don't think so: that would make it mediocre. Sustenance is about doing simple things, basic acts to keep at a productive level, with a slight implication that once refreshed by these acts, you will be better able to help others.