I think it was R' Avigdor Miller who said that one should write a list every once in a while to say thank you to Hashem for all the good He does for us. This can also be applicable to everyone- as everyone has something to be grateful for. In one of R' Shimshon Pincus's books, he says that every mitzvah leads a person to realize something he/she is grateful for. If you see a Mezuzah, and you head to kiss it- be grateful you have a house. If you get something Shatnez-checked- be grateful you have clothing, and so on. Each leads to a way to thank Hashem for all we have.
Without further ado: Top Ten Today (not necessarily in perfect order)
1. Breathing- air- respiration- oxygen
2. My body, with all of it's intricacies, from the organ to the cellular level
3. My Neshama- soul
4. My Parents and Family
5. My Husband
6. My daughter
7. Having a Parnasa in these rough times
8. The world we live in- the sky, the earth, the grass, the trees, the beauty
9. Yerushalayim- the zechus to live here, and this special city
10. The ability to think.
2 hours ago