Long endurance events are rarely one continuous battle. They are a sequence of short decisions made while tired: eat now, fill water here, slow down on this climb, put on a layer before you get cold.
Make the horizon smaller
When the finish feels impossibly far away, focus on the next controllable checkpoint. The brain handles “get to the next turn” much better than “complete another ten hours.”
Expect mood changes
A low patch can feel permanent when you are exhausted. It usually is not. Food, temperature, terrain and company can transform how the same effort feels thirty minutes later.
Keep a useful script
Replace dramatic internal language with practical questions: what is wrong, what can I change, and what is the next sensible action?