How can I stay in a state of bliss?

Why would you want to do that? A state of bliss distorts our perceptions as much as a state of sadness. Bliss feels good, but still it is a distortion. Mental states come and go. Trying to hold on or push them away just adds to our confusion. But our true nature was never born and never dies. When we become awake to our true nature, we are free to enjoy moments of bliss, we are free to cry when we are sad, but there is never any need to identify with them or with any mental state. We no longer are so caught up in our desires, our anger, our ignorance, our joy, our happiness, our bliss, that we can’t see what has to be done, moment by moment, to help this suffering world.