Optimism isn't believing everything is great,
“乐观”并不是指,相信一切都非常好

 it's believing that there is always will be a reason to be happy.
而是相信,一定可以找到一个理由,让自己开心起来

People wonder why I'm so happy all the time
许多人感到疑问,为什么我总是那么快乐
 

and take things in stride.
一切都能泰然处之

I'm an optimist through and through.
因为我是彻头彻尾的乐观主义者

I don't just think everything is awesome.
我并不是傻乎乎的觉得每件事都好极了

I have bad days like everyone else.
我和所有人一样,也会遇到烦心事

However I always believe there will be reason to be positive
不过,我永远相信,一定有一个理由让我积极乐观起来

whether I've discovered it yet or not.
问题只是我时候已经找到了它