I am in no means a professional but I have gone through this exact feeling and have followed through on those urges so trust me when I tell you this, don't do it. It won't help you and you will feel bad about it after you have done it and for the remaining time that the cuts are present on your skin. And once you take that first step and cut for the first time it is harder to resist the urges in the future.
I actually have a tattoo on my wrist now that I got as a promise and reminder to myself to never cut again and it has really helped me, but still to this day I have the urge to cut though it is extremely rare and passes quickly. The best thing for you to do is before anything else happens remove any sharp objects like scissors or knives or razors or glass or anything, remove them all from your room. If you get the urge to cut draw a picture on your wrist of something you love (as cliche as that sounds), rip up pieces of paper, draw a picture, write how you feel, hug a pillow as tight as you can, or even draw on yourself with a pen and make marks that way if you need to, but trust me you do not deserve to put yourself through that.
You are the embodiment of all of your dreams and hopes and memories, you are your past, present, and future, and every second you are on this Earth counts, because whether you realize it or not you change someones life every day. You are by no means worthless when you hold all of that and the power to change others lives within yourself. Your importance in this world is permanent because whatever you do or say in life has a ripple effect.
When you interact with one person you change their life just by existing in it and they then go on to change someone else's life and so on and so forth. Think about it. You have already changed my night when you made this post and now I will hold you in my thoughts and hope for the day that you are able to overcome these urges and feelings.
You are an amazing and beautiful individual and I believe in you, you can get through this and show the world how important you are! Don't give up hope, keep fighting, I know you can do this <3.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.