Rule 38: Since poker is a game of positioning oneself to win (but with no guarantee of winning), there are going to be times when doing exactly

Since poker is a game of positioning oneself to win (but with no guarantee of winning), there are going to be times when doing exactly the right thing leads to losses.
There aren't many sports or games where you can have a lifetime of experience, make every play exactly right, and lose. But poker is one of them. This tells us something it tells us not to approach it like other games.
This is a difficult concept for some players to understand. They ask. «What am I doing wrong?» And if the answer is «Nothing», it leaves no rational explanation. Yet this situation is common in poker. Coolness must prevail. Clinical detachment and composure need to be embraced.