I am a "glass half empty" person, but I would love to be a

[driver8]

"glass half full" person.

Is it possible to switch from pessimism to optimism??

[Oeditpus Rex]

1. Why not switch to realism?

The glass is twice the size it needs to be.

:shrug:

[Broken_Hero]

2. Good point ...nt

[Floogeldy]

3. Glass half empty of what?

Water? Air? Milk? Urine? Wood block?

[hfojvt]

4. I am not sanguine about that possibility

try memorizing these silly songs

1. Tomorrow
2. My favorite things
3. Smile - sing a song
4. Singing in the rain
5. Walking on Sunshine
6. My future's so bright, I gotta wear shades
7. Don't worry - be happy
8. Top of the world

[Crabby Appleton]

5. your half of the glass is empty

my half of the glass is full.

[Kutjara]

6. Half empty or half full; it doesn't really matter...

...because you know the glass will get dropped and shatter anyway.