Citta (awareness, mind psyche) needs skillful "attachment" to be healthy - upright-the basis for liberation. To be motivated towards this - is healthy motivation - not craving
Our mind /body is held in the grip of kamma, framed by anxiety, grief and other forms of dukkha. Mindfulness replaces this frame with clear, emphatic awareness.
Liberation is signless not a sensation, emotion or thought. The gates are signless, desirelessness and emptiness. "uncertainty" is the approach to these gates.