It would be a very great feeling and i might feel fulfilled especially if i earned the money through a business that i love so much,ten million dollars in a year is enough to get the best things in life and enjoy myself but one thing about wealth is that no matter how very rich you are you need to invest well because if you do not invest well then those money could be wasted and you can be back to square one,so investment is a key factor to consider when you are earning an income whether big or small