I know exactly what you mean, even though I live at home still so I do have people around, it is lonely. Its good though because its peaceful, you can get a lot done but if you feel down about it, it can be counter-productive. Don't you go into uni and see people from your course, have you made friends with any of them? They're probably feeling like you, maybe meet up with them if they live near you during the day for a coffee and to get out of the house. Make sure you go out every day, even if you just go for a walk or to the gym, exercise makes you feel better, and don't feel guilty about doing that either when you have work to do. Speak to at least 1 of your friends every day as well, remember although studying is and should be the priority, you have to look after yourself in order to do well - don't feel guilty for taking a little time out each day to do something sociable, even if you only have a telephone/facebook conversation, you need to get away from your work sometimes.