For about a year now I've been having trouble sleeping at night for unknown reasons. I'm a relatively active person with few health problems. I've noticed I've become a lot more irritable these last few months, and it's having an effect on my relationships with friends and family members. I'm getting into way more arguments, getting annoyed at little things they do, and I've been secluding myself a lot more lately. Until I can see a a doctor, I don't really know how to deal with this mentally.