заняться собой(It's a good day to look out for yourself – work on your resume, look at classifieds or consider starting your own business if you don't have one already. VLZ_58)
соблюдать осторожность(Well, Silver... look out for squalls when you find it. (R. L. Stevenson, ‘Treasure Island', ch. XXX) – В таком случае, Сильвер... будьте осторожны, когда найдете клад. rompey)