Value can be--

Information your reader needs to reach business or personal objectives

Suggestions for better health, more productive work, a happier marriage, a more satisfying life

Motivation to keep your reader on track or aspiring to new heights

Entertainment bringing smiles, chills or puzzlement to your reader

Pure esthetics--the joy of a beautiful book

Besides good content, your book needs to be well-written, organized and packaged and presented in the most appealing way possible with--

• A memorable title
• High-quality packaging and cover design

Finally, to be successful you need a realistic market for your book, a group of people who will want a copy of your book as soon as they know about it.