Quitting a job after 9 years once I realized I wasn't happy there anymore. I'm not the type who likes change, but this was the best decision I made in my life.

Quitting a job after 9 years once I realized I wasn't happy there anymore. I'm not the type who likes change, but this was the best decision I made in my life. I now work at a company with a much better culture, with a significant salary bump (over 4 years here and still happy with it). This taught me to not be afraid to make significant changes, even when the outcome is not so certain.