It is easier than ever to get a book published. Online, your philosophical writings can be uploaded to a publisher that will, cheaply and easily, professionally print the volume as a bound book. They often will print copies on demand, charging a flat fee for each copy. Some offer to sell the book from their site; you set the selling price and earn any money made beyond the base fee.

Why would you do that? Over time, your journal can become a mature work, a summary of your life experience and lessons learned.  It can be a reflection of you as a person. 

As a printed volume, your ideas can live on after you, there to be discussed, argued, and cherished by those who loved you. Imagine a spot on your grandchildren's bookshelves, or over their fireplace, reserved for your book of reflections !

Or, perhaps, you simply want to share your ideas with the world at large. Great, thoughtful ideas make the world a better place... share them. (Maybe even sell them, someday!)