ISFP (A Book About ISFPs, Written By An ISFP)
I've done the MBTI/ 16 personality test three times and got ISFP every time, so I'm 100% ISFP. I also relate to ISFP a lot and feel like literally all of what is said about ISFPs can be said about my personality type because it is my personality type. I just agree and identify with it so much, it even explains things...