Beautifully written. I would only like to add a perspective to this sentiment:
Maybe when I saw a world that had no room for me, I was actually the one rejecting the world, not the other way around.
For me personally, and maybe it applies to others, I've found that it's me rejecting my own self. Once I feel totally comfortable in my own skin (it happens sometimes but not persistently) I notice that the perceptions I think others have of me don't hold anymore. Simply because I don't care what others perceptions are. I only care that I'm happy and comfortable in my own skin. I radiate a higher frequency and notice that people tend to follow my lead naturally.
Furthermore, happiness is most certainly a choice. And so is sorrow and everything in between. We can choose happiness, albeit hard at times. The choice is always ours to make.
Thanks again for this awesome post.
-Narashi