I know how you feel. You can be lonely even in a room full of family and friends. Its not the number of bodies present. Its the folks you connect with; who gets what you feel; gives you a hug; supports you with no judgement. I've felt that way many times. I do lots of meditation and spiritual practice. I am gradually understanding the difference between solitude and loneliness. It all resides within one's mind. What works for me is the practice of being comfortable with myself. It isn't easy but it helps remove the feeling of loneliness. Maybe it will help you ? Hang in there, Sleepie !