For me, this is not a great question. Stuttering has not taught me anything positive. It was a real struggle and I had to learn to cope with it, and it's now better than it was, due mostly to age, I think, not because of tremendous effort. It's a disability. It is something to overcome, but I do not think there is any profound lesson to it. I suppose it gives me empathy toward the disabilities of others, I can say that.