You're trying to look after your body right? You know if you want to be in good shape you have to do something, true?
You understand how a chemical can effect a muscle? You understand the body makes chemicals too? You know the brain is part of our body? You know the brain makes and uses chemicals to let us think and make decisions?
So - knowing all of that what would it take to get the penny to drop with you that you have to look after your mind too? That just the same as your biceps you have to work and do stuff to care for it?
If you walked into a room with your mum and you were thin, your skin drawn, your muscles wasting - would you see a certain look on her face? Is that the same look you see when what's happening in your head is showing?
Jared, it's not so bad just to talk to a doctor, the more adult you become the more they treat you as one and making the decision to talk to them would be very mature. It would show you can apply what you know about the muscles in your arms to the muscle in your head!!