What To Say?

For sometime now, and actually, at various points in my adult life, I have felt God directing me to write. Often, I have been told, "You should write a book," or "You have such a way with words you should write." I have even heard, "You have a gift for words." In addition, my very first college class, English Composition, I was 28 years old and the teacher said, "You should be a writer." Now, at the ripe age of 53 the pull is still there to write and when I ask God, "What is it you want me to do?" The only word that comes to mind is "write".
Of course, I have discussed this on more than one occasion with my spouse, children, and close friends and I love the encouragement and support, but the problem is...what do I write about and who would care what I have to say? I also wonder that if I did write, I would have to write what I know, which is my life and then the question pops up, "isn't that a bit egotistical?" So I am asking you out there who know me...what do you think? You, who have seen me write...what would you like me to write about? Give me a topic and let's see what pops out of my "magical finger tips".
I look forward to what you have to say, so don't hold back, but when you comment leave your initials or blog address so I will know who is commenting.