Retirement is a difficult subject.
On one hand, there are many reasons it may be difficult to think about the future – the uncertainty, the seemingly long distance. However, it's also a long term project that starts with your own career.
The brief was simple: to illustrate the retirement plan as a on-going, life-long project. I chose the plant metaphor both because plants require constant love and attention an because it's probably something millenials (who are now facing for the first time these concerns) can relate to them.