The most important thing is to just get started. It may seem a little difficult at first, but the more you look for beauty, the more you find. You may be pleasantly surprised that there was a lot more beauty all around you that you have been missing all these years.
The other thing to remember is that there are a number of chapters in the book. Probably some of these chapters will fit in well with your way of thinking. They are all worth a try.
After you have read the book, or read it several times, then you can just go through the Table of Contents to remind yourself of the things that you can do to help yourself. Read the Table of Contents once a day for a week, then once a week for a month, and once a month for a year. If you can do this, you will be an expert in living a better life.