I know how you feel, I paint when i feel that way too...what i do is i write it down in a journal and think to myself the upsides of life. Meditate if you need to coop with yourself. Your life is valuable in my world...each person is valuable...your a trophy. I cut myself when i'm driven over the edge, you make beautiful things <3 life has hiccups and bad things happen...you never expect them sadly
but you can always resolve them by thinking about what you can do to make bad things into something good and pure