You don't need a college degree. What you do need is writing and communication skills to have a great book. You can obtain these skills from reading how-to books. You can hire a professional writer to rewrite your manuscript. Ghostwriters are listed on Web sites and in Writer's Digest Magazine.
Many famous authors use the services of ghostwriters.
If you hire a professional ghostwriter or editor to rewrite your script and query letter the odds increase dramatically of having your book published. It is an investment in your success and the cost is tax deductible. It takes money to make money. It is near impossible to be published and expect your book to be a bestseller if you do not invest in professional services to bring your manuscript up to industry standards. To save money on editing services is a recipe for absolute failure.