[英文高手請入]有冇一個phrase 係勸一個人唔好太悲觀

Do not always look at the dark side of everything !
Every cloud has a silver lining !

Below are some positive quotes for info, hope this helps.

There would be nothing to frighten you if you refused to be afraid. -Gandhi

I firmly believe the world will sort itself out in the end. Believe it with me. At least none of us will be around to be proven wrong. - Stuart Wilde "The Secrets of Life"

http://www.positivenews.net/quote.htm

“A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.” Winston Churchill

“The positive thinker sees the invisible, feels the intangible, and achieves the impossible.”

http://thinkexist.com/quotation/the_positive_thinker_sees_the_invisible-feels_the/10249.html