I briefly touched upon this yesterday, but let’s expand a little bit.
When you’re out on trail and you’re in the middle of a monstrous climb, or it’s pouring down hard, or some asshole critter just stole your food, you may wonder why you’re even doing this. And that’s a good question! So good, in fact, that there’s a thousand possible answers to it. If you can have some of those at the ready for when the question eventually pops up, you’ll be able to dismiss its nagging much easier.
You’re doing this because you decided, and know, that it’ll be fun and worth it in the end. Your past self was in a better position to imagine this, so have some faith in them. Besides, you’ve come all this way already. Turning back now would still take a lot of effort, without actually completing the task you set out to do. Just think of the view from the top of that mountain, the meal you’ll make at camp, the comfiness of your sleeping bag.
If that’s not enough, remember that the exercise is good for your body, the suffering is good for your mind, and the nature is good for your soul.