Nothing new under the sun. What you think, feel, hear see others do too. You are unique, but we have connections to others by what we have experienced. For example everyone has felt the betrayal of a loved one, friend, family or lover; everyone has experienced the death of someone they love or hated and the emotions connected with that. It's nothing new. But.... While I can not feel your feelings for you, I can write things that cause you to relive those feelings. The villain you want to caress with a ball bat, the wronged child that needs a friend and you just want to hold them. The woman that saw her husband making love to his mistress (this happened to me). The things you experience are the things your reader has experienced. It's your connection to them. Their situation may not have worked out, your situation might not have worked out, but the character in your book that they see themselves in can get revenge or see their ex run over by a steamroller while trying to escape with the life savings of the former lover. You bring laughter, tears, anger, excitement, suspense and a myriad of other emotions to your reader. They take your characters with them for the rest of their lives. It all comes from your experience. So what experiences or emotions do you want to start your story? Butt in Chair GO!