Get an editor for your first book before you do online publishing. A good one. It needs to be someone who has published a book or who has been in the industry a long time.
Talk to some other people you trust who've self-published a book. Ask them privately about the pitfalls and rewards. If you don't know any people who've done that, start trying to find online groups.
Think back to the past. Have you ever seen a friend wearing something you thought wasn't right, but you kept your mouth shut? Have you ever agreed that something was lovely but inside you didn't think it was as awesome as the person who owned it.
It is possible that your dear friends who read your work and say they can't wait to see it in print....can wait.
Getting published isn't the dream now. Writing the best book you can have is the dream.