You first need food, shelter, and other basic necessities, then it all depends on your definition of a good lifestyle.
Does a good lifestyle include an expensive hobby, or travel to far away places, or entertaining friends regularly?
Or it could simply be having access to beautiful places to meditate, books to read, people to converse with and enjoy companionship.
Only you can determine how much money it takes to have what you need and want.
I wish you the best in reaching that place, if you haven't yet!