I believe that the experience of suffering makes one appreciate the moments of his happiness more

You wouldn't know that you are Happy if you have never been Sad.

I believe that Happiness happens when we Grow as an individual, and that Sadness happens when we are in a place of stagnation, when we limit ourselves to the limited given circumstances.

I believe that Happiness is when you have found what you Love and share it with everyone else in the world.
And Sadness is when you haven't done that. So sadness is a guide that points you towards Happiness. It's an indicator of where you're at. If you're sad, you're not Happy, so you're not where you are meant to be, thus keep going forward.

Great post brother @Arckrai!Thanks for sharing. Following now :)