As a teenager I felt like that solid, red pimple with no give, no whitehead ripe for a satisfying squeeze. The pain on the outside reflecting the tense churning and discomfort underneath. A differentness I knew would keep me permanently locked out of their circle, disconnected from everyone else who seemed so in tune with one another. They had best friends. I never did.
Treat sleep as a learned experience. As much as we'd like to think of sleep as natural, and the ability to do it well as an inborn skill, the fact of the matter is that many healthy sleep habits are learned. Which means that they often need to be encouraged, taught, and reinforced -- often on an ongoing basis.