Afraid to hope?

We all have heard of the phrase, "Everything to gain, Nothing to
lose." We also have heard of this phrase, "Nothing to gain, Everything
to lose." Well, if u have everything, then there is always the
possibility of losing it all. But then again, if u have nothing, then
there is a possibility of gaining everything. It could be like a
cycle that goes on and on and on. One of the most important things in
life is happiness. If u are happy then there is a chance of losing it,
but if u are not happy, is it ever possible to be happy again? Hoping
to be happy doesn't really work coz its hard to hope if you're
unhappy. i dunno if i am happy or unhappy right now. i don't really
want to hope too much either. i think its probably because i have a
crush on a girl from work. =S i'm happy coz i THINK she MIGHT like
me. But i'm unhappy coz i'm afraid to be happy and hope too much.
Always dunno what to do.