It's always so difficult holding on to happiness, ne? It's so delicate, so fragile that it seems like just a soft sigh would carry it away. But no matter how short a time you may have had it, once it goes away, it feels like nothing is the same again. It feels like it's been such a long time since you've felt this lonely -- and you can't help but feeling a much more intense aspect of loneliness.
But why would you complain then? You know better already. SHOULD know better already. Every second is a learning experience after all.
So you stand up, brush the dust from off yourself and walk on. Lonelier, sadder, more alone than ever, getting yourself through the bleak, wide, and seemingly empty but constantly dangerous valley spread before you... until the next time you're happy.
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AFTERTHOUGHT: If anything, there's always hope after all.