Hii nooraa how are you doing i hope you're fine and have a good day
It's really a good question and i'll try to answer in English
I think it's the " satisfaction " with our lives. Like feeling that you are fine with all things around you,but also we must trying to make those things better to be more better ,and, sometimes happiness couldn't be found with money, cuz i think the happiness we make it with monay called "enjoying" not real happiness, somethings still for a while and then it fade
Also, Happiness can be found in things that we can't have it with money, a little things like that feeling when we see our mothers are happy and not sad , or have a true good friend , or make someone smile or do a beautiful thing for them , or do a thing that make ur family proud of you , or that feeling when you wake up early, or when you achieve anything
many little things make us happy and we don't notice that
So ,what i want to say is happiness doesn't have only one defintion, actually i still don't know much about it and i wanna read to know
this is some of my knowledge for now
if there are any mistakes i'll be glad someone correct them