Sufism is the path of the heart.
Sufi’s believe that by pure devotion comes the subjugation of the lower self (ego). Through this love for God becomes the union of the lover with the beloved.
Different Sufi paths use different meditation techniques. The Naqshbandi order uses the energy of love to go beyond the mind. The first step is to focus on the feeling of love in order to activate the heart chakra. For this purpose you can think of God. A friend or relative may be easy to start with. Sufi’s believe that the feeling of love will overcome the thinking process leading the person to an empty mind state.
The meditations are in silence. Through meditation they are able to cultivate silence, listening, attentiveness, and emptiness.