In Canada, roughly someplace between the official Low Income Cutoff (an income below which you qualify for government aid of various kinds) and the individual median income: that is, between $24k and $27k in Canuck dollars, per person.
You could certainly be happy on less. You can be unhappy on way more.
But for sure it’s abundantly easy here, with that much dough, to have a life where any unhappiness you feel is NOT due to material deprivation.
In my humble and road-tested opinion.
(Honestly, 2 of us live like pharaohs spending $54k, or the top level of 2 such incomes. Pharaohs!)