Sometimes, when you go on a photo walk, the environment refuses to cooperate. You just won't find anything interesting to shoot.
It's no use being sulky about it. If you get funky, you'll just miss the opportunity when it does arrive.
A better approach: Perk yourself up by creating something to shoot. Just a few pebbles on top of each other will do.
Just a few minutes after taking this shot, I got the ones I published in my A stroll through the woods post. If I hadn't deliberately perked myself up, I might have missed them.