Some might believe that when you reach enlightenment you gain a peace mind and a cessation of suffering, nope, not quite! Actually once you reach supreme enlightenment you are who you were before, but rather awakened. You still feel happy, sad, and frustrated, but when you do feel those emotions you do not become attached to them. Right now, like me you are probably prone to getting lost into your own emotions. If you suffer the loss of a family member you grieve greatly for it, if you suffer an unexpected break up in a relationship it can be devastating. But when you have reached enlightenment you still feel those emotions but you do not let them control you, instead you control them to the point to where you can acknowledge them, accept them, then send them on their way.
The end of suffering comes once you have reached enlightenment then pass away from this world, leaving behind the laws of karma and finally reach Nirvana.
“I gained nothing at all from Supreme Enlightenment, and for that very reason it is called Supreme Enlightenment.” -Buddha