Long I have known but I just realized

I can still remember this quote that my prof in anatomy gave as introductory to the female reproductive organ. The first time the sentence landed my ears (plus eyes i suppose) i knew it will be added on the continually growing number of thoughts stored in my prefrontal brain (wait ill stop now before i give high fallotin' words). The quote goes like this:

"your sorrows are your joys unmasked" --Kahlil Gibran

Ironic, isn't it? A lot of things are and I'm really fascinated in it.
How come sorrows are unmasked joys? Its absurd but true.
It is like saying that all our joys, happiness, or the like all rooted from our very own pains. The pains that pinned us down, knocked us several times and is still continually crippling us. It was as if telling us to REJOICE SUFFERING for when it cease to exist we will never TASTE HAPPINESS or in other words without SORROWS there can never be JOYS.

Did you get my point?
Ok i guess that's it for now. Its hard to explain things and I feel a lazy to elaborate on that.

P=J=S=H=L=M=A (decode!)