Dealing with Extreme Loneliness and Insomnia

It is currently the middle of the night, and mpst nights if not all, and just randome parts through the days, I get this extreme feelings of saddness and loneliness. I always get this feeling of "no one likes you, you are worth nothing, you will always be alone and that won't change." I know this it isn't true and that I hace some people, but its this inevitable feeling that I am and always will be alone. This also isn't helped that I also have pretty bad insomnia, so this feeling lasts for hours. Does anyone else have these moments, and if so is there something that can help the feelings or lack of sleep?