The author (right) is the only Gen Zer in her family.Erin LiamI'm the youngest of three siblings — and the only Gen Zer.When I graduated this year, I faced the realities of job-hunting and adulthood.I learned lessons from observing my sisters and other millennials navigate their 20s.After 16 years in the education system, my time as a student ended on a random Wednesday afternoon in April.