What should we "do" with the mind in meditation? Nothing. Just leave it, simply, as it is.
Sogyal RinpocheAlthough we have been made to believe that if we let go we will end up with nothing, life reveals just the opposite: that letting go is the real path to freedom.
Sogyal RinpocheAt the beginning of meditation training thoughts will arrive one on top of another, uninterrupted, like a steep mountain waterfall. Gradually, as you perfect meditation, thoughts become like the water in a deep, narrow gorge, then a great river slowly winding its way down to the sea; finally the mind becomes like a still and placid ocean, ruffled by only the occasional ripple or wave.
Sogyal RinpocheThe point is not how long you meditate; the point is whether the practice actually brings you to a certain state of mindfulness and presence, where you are a little open and able to connect with your heart essence. And five minutes of wakeful sitting practice is of far greater value than twenty minutes of dozing!
Sogyal Rinpoche