Need your help

Guys i am 25M unmarried joined my family business 2 year ago i come from baniya family. Basically i wanted to know how much is enough to earn to have good car, house can go for anything before knowing their price. Because i am seen people earning 1 lakh per month giving 20k rent school fees car emi still they maintain really good life .

May be 30 - 40 year people can make me understand how much is enough