The more you notice about what there is to appreciate in life, the more you do appreciate life. Appreciation breeds appreciation.
It's so easy to get lost in the mind; to go down a narrow track of thinking, or get over-focused on goals while you miss seeing the beauty all around you.
Don't be like most people, and wait for a shock or a medical scare to start noticing the beauty in nature, and what's possible in every interaction or choice. Be here now.
This article by Sarah Rudell Beach for leftbrainbuddha.com shows how one afternoon in the Fall can produce many beautiful moments. These are the kinds of moments people look back on to remember what was best in life.
The trick is, if you don't notice the moments as they happen, they won't be there to look back on in the storehouse of your mind (ie: the reality of your life).