It seems to me happiness/fulfillment needs to always be independent of any comparison to be healthy! That’s possible only when our Center is the “Universal principles". And most importantly, happiness shouldn’t be a goal in itself; rather a natural by-product of our meaningful life, nurturing relationships and our mission which goes beyond ourselves!

Mark Manson said it best here:

"The pursuit of happiness plunges us head-first into nihilism and frivolity. It leads us toward childishness, an incessant and intolerant desire for something more, a hole that can never be filled, a thirst that can never be quenched. It is at the root of corruption and addiction, of self-pity and self-destruction.
When we pursue pain, we are able to choose which pain we bring into our lives. And this choice makes the pain meaningful --and therefore, it is what makes life feel meaningful.
Because pain is the universal constant of life, the opportunities to grow from that pain are constant in life. All that is required is that we don’t numb it, that we don’t look away. All that is required is that we engage it and find the value and meaning in it.
Pain is the source of all value. To numb ourselves to our pain is to numb ourselves to anything that matters in the world. When we deny ourselves the ability to feel pain for a purpose, we deny ourselves the ability to feel any purpose in our life at all."