Role of God...Happiness & Sorrow

if you want bliss, you are trying for it but unless someone other than you, who is the source of this bliss exists, we cant achieve it. This source of bliss and knowledge is called Eeshvar in Vedas.

......... It is not about reward or punishment at all. Eeshvar’s aim is to help us attain Moksha. Thus this whole Law of Karma is the part of the same. Whatever Karma we do, it leaves its Sanskaar behind, on the soul. When a soul does bad, its “Kusanskaaras” or evil impressions further try to deviate soul away from Moksha path. To get rid of these impressions, we need to undergo certain conditions, which are controlled by Eeshvar so that undesired Sanskaaras can be eradicated. These conditions, being painful, look punishment to us, but these are essential. Its just like surgery, which gives pain but is essential to get the health back.

So please remember, all happiness and sorrow we feel are the result of our own deeds. In fact, sorrow and happiness are nothing but the essential stages in the path of attaining Moksha and the quality and quantity of sorrow and happiness etc depend upon the type of bad and good deeds we have done. We cant know when will we get the fruit of a particular Karma but it is clear that whatever we experience at any moment, it is the collective outcome of our deeds done till that moment.

http://agniveer.com/548/theory-of-karma/