In India, nirvana is a state of perfect peace and freedom. It is greatest happiness as well as it being the liberation from the repeating cycle of birth, life and death.
Combining the two, to attain this kind of release, we need to clean up our karma. That means our actions need to come from a place of kindness and love. But it also means tending to our thoughts. In the case of Buddhism, that points to an undisturbed, “empty” mind (empty in the sense that it is not constantly chattering and running the show instead of our peaceful soul).
How it feels is free, joyful, and at the same time at peace. It is not a state of excitement and yearning. You can get glimpses of this feeling when you meditate through any other way that pushes our survivalist thinking apparatus to the background and let our Soul emerge in the foreground. Therefore, to experience it, you must be in the present moment.
It becomes a problem when people see Nirvana as something in the future. It is something in the present. It is a present liberation. People will spend their whole lives chasing nirvana, as if it were the next fabulous prize to be attained. It becomes like the Christian fallacy of heaven and hell. It becomes another source of fear, as in, “I will will never reach Nirvana. I’ve been a bad person and will have to keep reincarnating to pay for it.” This fear is exactly what blocks the feelings of nirvana out and keeps us on the difficult wheel of life in the physical.
So, to feel nirvana, get in touch with your inner being that is connected with the source energy of the Universe. However you accomplish this: Yoga, conscious breathing, undistracted meditation, or present moment consciousness, it is attainable and is the best feeling in the range of ecstatic bliss.