Give your nails a trim and file today. It may help keep them healthy and strong, and prevent them from breaking or splitting. To trim your nails, use nail clippers or nail scissors. Cut each nail straight across. Then shape them with a nail file. You may choose to square them off, or you may opt for a more rounded, oval shape. Finish your manicure with a quick hand massage. Use your favorite oil or lotion and make sure to rub some into your nails and cuticles.