The standard question here is, “What can I do to help myself?” But I would change it just a little bit to, "What will I be able to do to help myself?”
The problem I’ve encountered is that I make a beautiful list of things I can do, but when I actually need that list, I either can’t get myself to do the things on it or don’t even bother looking at it.
When we’re in the middle of relapse or a bad day, we just can’t do the same things we can do when we’re alright. Unfortunately, that means the beautiful, comprehensive list becomes pointless.
Fix your coping strategy to the experience you have when you really need it. My advice is to keep it short and simple. Ideally so simple and short that you don’t even have to look at a list to know what to do. Once you’re feeling a bit better, then you can contemplate the long list you would have ignored.