I used to cut and burn myself so I feel your pain.
I was listening to a podcast today, actually, and it mentioned a coping skill you might try.
They said, when you feel like self harming (or even any time you want to relax I guess) you could paint your finger nails. This passes the time and keeps your hands busy for a while.
I guess the fumes might make you sleepy too. Ha ha. Just kidding. Don't inhale fumes. [emoji41]