Gray hairs

I saw myself in a mirror after taking a shower and realized my gray hairs are increasing. The gray hairs began to sprout when I was a junior high school student. I guess it's too early. We say "The people with a lot of gray hairs experienced a lot of troubles and overcame them", but it isn't true of me. I addition, proverbs say "Gray hair is a crown of glory" or "It is gained in a righteous life." But I just wish I would have healthy shiny brown hair again.