At age 4…

At age 4 success is . . . not peeing in your pants.
At age 12 success is . . . having friends.
At age 16 success is . . . having a drivers license.
At age 20 success is . . . having sex.
At age 35 success is . . . having money.
At age 50 success is . . . having money.
At age 60 success is . . . having sex.
At age 70 success is . . . having a drivers license.
At age 75 success is . . . having friends.
At age 80 success is . . . not peeing in your pants.

=P