Sentence:  Rather, we are asking the client to <WSD>lean into</WSD> the symptoms; we encourage them not only to stop struggling but seemingly to embrace the very things that they most dread. 
Meaning of the word marked with <WSD> tags:  To take on or embrace something difficult or unpleasant, usually through determination or perseverance; to find a way to benefit from, or alleviate the harm of, risk, uncertainty and difficult situations.