Ever looked back to see what your mistakes cost you? Did a little review - biggest moves and millions they cost

Kind of a painful one to write but also a great reminder of all the lessons you learn as you move through your career building, buying, selling, and growing.

It reminds me that it's all a game. Making money. Building things.... and that $10-20M in coulda shoulda's don't really matter if you keep going.

What were the biggest investments? Companies? Opportunities you missed out on?
https://contrarianthinking.substack.com/p/how-much-would-i-have-if-i-wasnt