This is a nice “coming of age” story. We all have one, but yours is less common and more difficult in certain ways than most. Fat kids, kids with ADHD or OCD, kids with deformities, kids with genetic disorders, all kids have to discover who they are and come to terms with it. Some find it easier than others.
As you tell it, you had a sympathetic family for support. That’s a huge advantage that some kids don’t have. Some stories are not such happy reading.