You're going to have more rejection than acceptance.
No matter what you do, you'll never run away from you.
One other thing, if it's possible, as songwriters, you should also develop yourself as record producers.
There's so much fear involved in trying to do something you don't know how to do that drugs and alcohol can become a big part of your life if you have an addictive personality or are very unsure, which most songwriters are.
I quit college. I was studying architecture for about a year.
A guitar riff played on a piano doesn't come close to the purity of it being played on a guitar but I faked it enough to get by.