Remember: the time you feel lonely is the time you most need to be by yourself. Life's cruelest irony.
I am going to give you a piece of advice... advice I wish I'd been told in guidance class back in high school, in between the don't-do-acid and don't-drink-and-drive films. I wish our counselors had told us, 'When you grow older a dreadful, horrible sensation will come over you. It's called loneliness, and you think you know what it is now, but you don't. Here is the list of the symptoms, and don't worry—loneliness is the most universal sensation on the planet. Just remember one fact—loneliness will pass. You will survive and you will be a better human for it.
Once he entered my life, I promptly forgot all my years of putting on a brave face while browsing at bookstores until closing time, and of having one, two, three beers while watching crime shows and CNN. I completely forgot the hateful sensation of loneliness, like thirst and hunger together pressing on my stomach.
It'd be preposterous for me to propose a universal cure to loneliness but I will say that people who do the things they find interesting, either creatively or vocationally, tend to become unlonely very quickly.
A man in a bookstore buys a book on loneliness and every woman in the store hits on him. A woman buys a book on loneliness and the store clears out.
The capacity for not feeling lonely can carry a very real price, that of feeling nothing at all.