For the guys out there, how many of you have considered doing this?
Before you start your job, you shave your head completely and you let your hair grow out. You never cut it until you quit in two years.
You do this for a few reasons. One is to gauge how much time you have until you finish. You should have 1 foot of hair by the time you finish. So judging by the length of your hair and comparing it to a foot, you can estimate how much time is left.
The second reason is that it shows a subconscious evolution of growth to others. Your peers will see the hair growth as a sign of dynamic change, and not something static.
Third, once you cut it, it's like a spiritual rebirth. Like a reptile shedding its old self.
The fourth and main reason is to create a biomarker. You'll have a foot of hair to remind yourself of where you were in the past and how long you worked. Your mark in the world. And if you ever forget how long you worked for, you can measure the length of that cut hair.
And it's a conversation piece.
Just something random that I think will help.