Owning more things does not make you happy. Advertisers would like to make us believe that we can buy happiness, but we cannot buy happiness by buying more things. Wanting things goes back to our heritage as hunter-gatherers. It was important to hunt, and to gather, but that was for reasons of survival. For most of the people reading this, our 'wants' rarely relate to our survival.
Happiness is more a process than it is a goal.
Eventually, we will probably find that happiness is the journey, and that if we focus only on the destination we will never get there. Talking about unhappiness does not make you happy. It is true that we all need to vent at times. The purpose of venting is to express our dissatisfaction with something so that we can move on. If we vent just to let others know how badly used we are and how awful something is, nothing new will happen.