The other day on TV, I heard the story of someone who at one time didn't feel that he fitted in with his peers in college, felt inferior to his more talented sister, got really depressed, and tried various escapes to overcome his loneliness. This kind of feeling is pretty common among all of us, myself included in the old days. We all want to feel liked or admired by others and be somebody ~ it's that ego in us.
Of course, when you do become that somebody, you may lose any old friends who really care about you and gain new ones not necessarily of the desirable kind. The truth is that you can have a lot of friends and buddies and deep down still feel lonely.
But, once you get to know the Lord well, all things change (as happened later to that person I mentioned at the beginning). When you have Jesus as your friend, the emptiness in life is gone! Do you know that "lonely Christian" is an oxymoron? The only time a disciple of Christ could feel "lonely" is when he or she no longer belongs to the world. The Lord alone is more than sufficient for us.