In this interesting transcript of a talk by Tulku Urgyen Rinpoche, he explains how recognizing one’s mind essence brings peace and the state of enlightenment. He mentions:

If you simply recognise your essence, you are immediately face to face with the three kayas. It is so simple that it’s actually incredibly easy. There is no way you could miss it. The problem, in fact, is that it’s too easy! It’s too close to oneself. Some great masters have said the fault lies in not that it is complicated, but that it is too simple. People don’t trust it. They think, ‘This is just my present state of being awake, so what use is it? It’s not very special. I want something astounding, something totally different. Something that is far superior to this pres­ent state of wakefulness. Something with amazing lights and great splendour.’ And they ignore their present natural state of mind and hope that something extraordinary will happen, maybe coming down from above. They are right: this present state is not that special. But by sitting and hoping like that, they turn their backs to the innate three kayas. If you recognise your own mind, on the other hand, in the mo­ment of seeing, there is freedom. You are liberated from any thought involvement at that time. That itself is the essence of nirvana. If, however, we ignore that fact and chase after something else—some kind of altered state we believe to be superior to the present nature of mind—it is going to very difficult to ever find the buddha mind.

Read more from the article here.