meditation is not supposed to be the fabrication or the reinforcement of some particular state, but simply the cultivation of the awareness of whatever is arising in the mind.

What's recommended is that if you have a good experience, don't get too excited. And if you have a bad experience, don't mistake it for a serious deviation or a sidetrack that you have to find your way back from. If you have a bad experience, just continue practicing as you were. In other words, whatever happens, just keep looking at your mind.