Leibnizian optimist
Pollyanna
aspirant
aspirer
chiliast
dreamer
hopeful
hoper
idealist
irrepressible optimist
millenarian
millennialist
millennian
perfectibilist
perfectibilitarian
perfectionist
philosophical optimist
positivist
ray of sunshine
utopian
individual
mortal
person
somebody
someone
soul
millenarist
optimism
cynic
disciplinarian
existentialist
grumbler
hopefulness
joker
kicker
matchmaker
materialist
optimists
persecutor
pessimist
punster
romanticist
sentimentalist
skeptic
snuff-taker
workaholic
worrier
youthfulness