I’m looking for a book from my childhood (born in 1977).  The main character was a little blue monster, and if I remember right, he was very afraid of just about everything, and was quite little compared to the other monsters of his kind. I think the book ends with him feeling safe after finding his monster mommy. This illustrated children’s book’s main character is dark blue, with a large head vaguely shaped like a devil, or maybe a tear drop (wider at bottom, narrow at top, perhaps with two ear-like horns?). He might have had a tail, and his body may have been “textured” with some black lines, and typically was depicted with an open mouth (indicating fear).  I vaguely recall that most of the book was devoid of color in the illustrations, save for the slightly panicked looking monster. My hazy memory makes me think that the book was published sometime after 1960, likely in the 70s, and certainly before 1983 or 1984. I think we had a hardcover of it growing up.