Just Keep Looking at Your 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.
-- Thrangu Rinpoche, Pointing Out the Dharmakaya, pg. 73