Dreaming of a blade means remaining sharp to cut through all the unimportant things in life. If there are friends who don’t value your friendship the way you do, it may be time to cut them out from your life. If there are peers dragging you into the dumps with them, it may be time to reevaluate your group of friends.
Life is not about staying in one place. Stay sharp with your blade, and create your own paths.
Also, a blade in the dream is an indicator that something is going to happen soon or that we are about to face a challenge in life, perhaps death. A blade also hints of something sharp and dangerous, because you can remember the feeling of cutting yourself on the knife when you were young.