This is a repository for major, life-altering mistakes that you or others have made. Detailed accounts of specific mistakes are welcome, and so are mentions of general classes of mistakes that people often make. If similar repositories already exist (inside or outside of LW), links are greatly appreciated.
The purpose of this repository is to collect information about serious misjudgements and mistakes in order to help people avoid similar mistakes. (I am posting this repository because I'm trying to conduct a premortem on my life and figure out what catastrophic risks may screw me over in the near or far future.)
Be careful about how much you invest in a relationship. Whatever you might think at any moment, the probability that it will end in the future are relevant. I happened to make several life-changing choices in order to optimize the relationship with my former girlfirend, since we had been together for a long time and thing were sitll looking awesome. She dumped me abruptely, and I found myself navigating into a huge void of lost friends, lost hobbies, and a job that I like, but it's not the one I had always wanted to have (and had, before changing for the sake of the relationship).