OMNISCIENCE

There are four stages to ultimate happiness. 

When our experiences of joy comes from fulfilling our wants or getting rid of things that we don't want, its the first stage of happiness. Enjoying good health, wealth, status or sometimes even lessening of pain can make us feel happy.

Second stage of happiness is when we become an inwardly focused being and are awakened. We gain clarity and are able to 'see' things the way they truly are, instead of being biased with our beliefs. We become a seeker of Truth. Things no longer bother us and we find humor as things begin to unfold. 

Third stage of happiness is an internal state of joy which is independent of thoughts itself. This is the experience of an Omniscient or an Arihant.  

Fourth stage of happiness is Bliss. When happiness is an ever-flowing river of joy due to freeing oneself of all the karmas. It's then that such joy is unobstructed as experienced by a Siddha.