Replying to Where did you fuck up?

At what time in your life did you fuck up the most? Did you flunk out of school? Lose a friend? Waste time? Waste money? Sacrifice your dreams?

I made the mistake of falling into the "fuck the system" mind set, letting that take over all ambitions i had of going to university, having a career, etc... Mainly to do with abusing cannabis through highschool.

Interested to see where other people have gone wrong, and what you have done to fix those wrongdoings.

Consider this an NS therapy thread.