What lesson did we learn about the Stockdale Paradox?

Group of answer choices

Optimism can be disastrously, it's better to be determined and confront the brutal facts of your situation.

Optimism is important to drive one positively into the future. If pessimistic about the future you won't have forward movement.

Admiral Stockdale, whom the paradox is named after, demonstrated how one should "keep one's head down" when facing difficulty to survive and life another day.

In business, like war, you are always confronting a challenging foe $-$ avoid that foe, so you can survive to fight another day.