The wave can live her life as a wave, and at the same time she can live the life of water. She does not have to die in order to become water, because the wave is water already in the present moment.
Nirvana means the extinction of all notions and concepts, including the concepts of birth and death, being and nonbeing, coming and going, but it does not mean the extinction of life. Nirvana is the ultimate dimension of life, a state of coolness, peace, and joy.
It is not a state to be attained after you die. You can touch nirvana right now by breathing, walking, and drinking your tea in mindfulness. Everything and everyone are dwelling in nirvana. You have been “nirvanized” since the very non-beginning of time!
If we can live our daily life deeply, we’ll be able to touch nirvana right in the here and now.