It's so easy to become upset when things don't work out our way. Many feel like failures, that no matter what they do, but life just proceeds as it wishes. Nothing to feel badly about. We do all we can and certainly can bring benefit, but let's take a moment and dwell upon the most significant koan, question of all. Ultimately,  Who's In Charge?  You are a visitor here and life will continue on in its own way, long after you have departed. What did you come here for? Just focus on that. Where are you headed? Offer what you can and don't dwell upon the outcome. That's not in your hands.