I suck at motivation stuff, but you're amazing, so here we go:
You're a talented writer, but talented isn't the most important thing out there. You're also a dedicated writer. You've created the most characters I've ever seen on this site, you create so many cool ideas for roleplaying. You have such a creative mind and you don't squander it, which is awesome.
Life sometimes feels really, really long, which can make you shortsighted. Think of it like this: you're young and things always change. Change is good, change is natural. You'll find things that make you happy, you'll develop your skills, and even if you're disappointed, you won't be where you are now. You'll improve at writing, you'll be older. You'll be even more of who you already are.
It's hard to be inspirational towards someone who is such an inspiration to me. You're kind, warm, and welcoming, you've got a great personality, you're smart and you're interesting and you're imaginative.
I don't know what else to say except: God gave you talent. What you choose to do with it is incredible and I admire you. You're a great friend and a great writer and I support you 100%.