Most of the day I feel empty and sad. 

I dont speak to people much because I fear judgement. 

But also I dont speak to people because I find everyone incredibly annoying. 

I get highs that last about an hour or two sometimes more and normally even though I'm alone, I dont feel lonely instead I feel really happy and hyper and start talking to myself alot. 

When I'm at my lows, I will feel suicidal and self harm. 

The lows and highs aren't necessarily triggered by anything in particular. Most of the time I'm low. 

I cant concentrate on studying because either im too hyper and lost in daydreaming or either I'm really sad (this is normally the case) and dont see the point in doing anything. 

I have intrusive thoughts. I have constantly throughout the day. And they're just about one person (someone of authority). Someone I barely spoke to because im shy. And now that I dont see them anymore. As in I try as much as possible to see this person and watch them discreetly. And then I imagine us having long conversations and being extremely close and imagine seeing them in the future. Which is weird because in real life I never spoke to them. But now I think about this person everyday.