>I try very hard, but nobody appreciates me.
That is because there are no medals for trying in life, dipshit. You grew up in an abusive school system which erroneously taught you that trying counts for something by giving you things like "participation ribbons" and other rewards just for showing up and being a part of the social construct by participating, regardless of whether your participation accomplished anything good. So you grew up psychologically relying on a steady stream of outside affirmation to provide you with your own self-worth. In the real adult world however, there is no reward for participating. It is simply expected of you…it is the barest minimum you can do to not be abandoned by society like a bridge-living wino. Your youth was nothing but a lie in order to pass responsibility for you on to someone else. You were, in every regard, unwanted. They had you because they thought it was expected of them, or because they were too lazy and stupid to use birth control. Not because they cared about you or wanted a child to love and care for.
And now you wonder why you feel so fucked up mentally? Really???
Wake up, OP. You are on your own in this world, and you can either grow up and start kicking its ass or accept the fact that you have no place on this planet.