Dear Halfway down the glass,
My Glass Is half full, but it is not a glass it is a cup. A cup made of plastic so it will never break and will always be half full! Beware pessimists keep yours in a glass, or should the day come you decide to rid yourself of your pessimistic ways. A cup will confine you to a world of half emptiness. If you stick to a glass theres always that smidgeon of a chance it might succumb to the trials and tribulations of the world and break you free of your world of half empty.
(Suggestion start over with a Plastic Cup half full!!)
from half way up the Glass