There are no irreversible mistakes.

True learning arises from action. Practice deciding quickly.

If you believe that the purpose of life is optimizing and accumulating the best experiences, then yes, there are irreversible mistakes, and you will need to carefully plan out everything.

And yet, life will still disappoint you, much more often than you’d like. There are many contingencies and factors than you cannot plan for.

Here’s another way of looking at it: The real purpose of life is inner growth.