The phrase means to consider or view an issue, situation or problem in a new and alternative way. It involves stepping outside of one's usual frame of reference and examining things with fresh eyes, in order to gain a new understanding or insight into the matter at hand. This can help to reveal previously unseen possibilities, solutions or opportunities that may not have been apparent before. Essentially, it is about changing your perspective so as to see things differently, which can lead to creative thinking and problem-solving.