It isn’t your lack of judgement I suspect. It is hindsight...

It isn’t your lack of judgement I suspect. It is hindsight regrets? Greed most likely which we all suffer from. Kicking oneself after selling to see price continue to rally?

Downside risks of brine? What makes you think spod mining is any less risky? Or any other forms of mining. DSO dig and ship IO looks easy enough on the surface so why did Cliffs shut up shop? Or for that matter BCI?

Not helpful to be regretful, mind poison and all it does is to encourage you to cut your gain in the next opportunity whatever sector the exposure is. Good luck to your venture.