Can't stop thinking about sui, any aspect of it. Need to study, but my mind is distracting me quite a bit. I hate this... what more can I do?

Few minutes later
I did study, I just hope i do well on my final. I will try to stay around people today/in public places, other than that I don't know what more I can do. I will exercise after lab, to see if that will help. Any other suggestions are greatly appreciated.