adrift

when the senses of a sadhak come in touch with material world they often overpower his wisdom and force it to their direction

This shloka of geeta says:

Here the condition of a sadhak, one who is trying to become one with God is compared with a boat. Jusl like wind sometimes forces a boat to its direction- the senses when they come in touch with material world, overpower the wisdom and force it to their direction.

But once a sadhak has found confirmation from his heart that all he wants is God his senses withdraw themselves from material world voluntarily and his wisdom stabilises in God. The fear of being driven by desires slowly vanishes.