I've been better since I've done surveys and they're constantly asking your age.
Mine is easy to work out: born in 1980? there's a trick to it
You take the first number of the year, add it to the third to make the first digit then the 4th number is the second digit. So 2017: 2+1=3 and 7 = 37
That'll work right through until 2099... not that I'm likely to make it that long... and trying to remember your age at 119 is probably not your main concern
Of course that gives your age at the end of the year so before your birthday it'll be one less.