I find afternoons/evenings/weekends to be the hardest too.
Can you make it to the chat tonight at 8pm? Maybe you can get some ideas there.
I got through yesterday and last night by forcing myself to stay FAR away from my "supplies" - everything I use is upstairs, so I literally didn't go upstairs ALL day and ALL night. And I colored mandalas, which I find soothing for some reason. By the time I went upstairs, I was sleepy enough to just go to sleep. I told myself I could cut when I woke up if I still wanted to - but I haven't had to do it so far today.