For me at 16 I knew what i wanted to do and went down that path, to become a Nurse, however things just did not work out that way in the end, and i went from job to job mostly doing clerical work in the armed forces as a civilain, then i had my son at 24 which was a good age for me, however in hindsight now i wish i had a career to fall back on especially when my children were school age, so if i were you i would embark on that first and have the children a little later.