I am thankful for my health.
I know so many people who have dealt with (or are dealing with) serious medical issues. Two of my best friends are cancer survivors (and are only in their thirties), and my sister-in-law is fighting cancer now. My husband lost both his mother and his stepmother last year and my BFF's sister had a heart attack this past summer at age 42.
In a world where so many people struggle with being healthy, I am grateful that so far I seem to have inherited my good health from my parents!