During our 18th year we begin our second cycle in this spiral of development. We then continue to re-visit these stages through the rest of our lives. You can, for instance, work out what stage you are currently at by dividing your age by 19 and comparing the remainder to the age and related stages of development described above. For example, if you were 43, this is how you would work out which stage you were currently recycling; 43 divided by 19 = 2 remainder 5. Five years puts you at the end of the identity stage and about to start the skills stage.