Does it last?

I've finally realize something. That is...
Learning to stay happy are harder than anything else in this world.
Learning to stay alive are much more simpler because all you've gotta do is to appreciate your life.
But to stay happy, its the toughest things to be done.
Happiness don't last forever.
At this minute you are happy,
but who can tell what is coming up in the following minutes?
Even there is a will but there isn't a way for it.
Saying are not like doing it.
Its tougher to be done than say.