Well I think a good place to start with a healthy moral standard is with respect and love as the opposite to respect and love is conflict, not a very good moral standardOne of the most powerful tool in philosophy is Rand's razor
first blade is "Rand's Razor", named after the famous novelist-philosopher Ayn Rand. Rand's Razor simply states, "Name your primaries," which means "name your irreducible axioms." It holds the basic axioms of existence, consciousness, and identity as the standards by which to ponder or to reject any assertion."Slashing Your Way to Certainty" https://attitudeadjustment.tripod.com/Essays/Slash.htm
The requirements of cognition determine the objective criteria of conceptualization. They can be summed up best in the form of an epistemological “razor”: concepts are not to be multiplied beyond necessity — the corollary of which is: nor are they to be integrated in disregard of necessity."Lexicon - “Rand’s Razor” - ARI Campus" https://courses.aynrand.org/lexicon/rands-razor/
So, you have acknowledged that some moral standards are good, while some others are bad. A universal moral standard is that which are good in every circumstance, without exception.