Sky Angel, try doing this when you're feeling a lot: Sort out what's really making you feel this way. Sometimes I get so stressed out with everything that's going on in school and I think I have no idea what's going on, and let's say a good friend of mine isn't having a good day and isn't being entirely nice, I'll equate all of the stress I have from school with him. Not because I'm looking for something to blame, but just because I'm already frustrated and I'll start making it out to be that I'm realizing some huge problem between us or whatever.
Sometimes you just need to step back and try to understand what's the main source of stress and not what set you off. Try doing that. And then, once you have a better idea of it, try dealing with it that way. Or, if that's not working, come back here and we'll see if we can help you out. And if the other things seem to be a part of what's making you feel the way you are, break those things into other sections. Like, do it like this:
The work I've got going on in school is really stressing me out right now.
It hasn't helped that my friend and I haven't been getting along recently. I think he and I might need to have a talk about what's going on.
Also, there's this girl I like and she keeps acting differently each time I see her. I feel like she might like me, but she doesn't always act that way. I'm not looking for an answer from you guys, it's just contributing to what I'm feeling right now.
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I think explaining things like that won't only help other people understand what's going on better, but will also help you deal with it better personally, as well as understand what's going on with yourself better. Take it from a guy who has a lot of emotions that other people don't understand, either. I just happen to be a writer, so I'm able to express them easier than you might be able to.
I really think we're similar in the way that we aren't readily understood by people, the only difference is that I have better language skills. That's not an insult, I'm just saying that now that I'm thinking about it this way, I can see why you'd really relate to the story I wrote.
Let me know if I'm onto something or if this helps at all.