Success

At age 4 success is . . . not piddling in your pants.
At age 12 success is . . . having friends.
At age 17 success is . . . having a drivers licence.
At age 35 success is . . . having money.
At age 50 success is . . . having money.
At age 70 success is . .. . having a drivers licence.
At age 75 success is . . . having friends.
At age 80 success is . . . not piddling in your pants.

Pretty good yardstick if you ask me