I've learned not to make future-plans* unless I'm consistently doing well.
Meaning no matter how much fun (or whatever) something sounds like now? In 4 hours it may well sound like hell & be an impossibility. So I need to focus on doing what I can, right now, as I can do so.
As I stabilize and I can generally predict how I'm going to be in a few hours, or a few days, or a few weeks... Then I start making plans. Tentative ones, but plans none-the-less.
* One of the things I've found is that when I'm in survival mode, regardless of my mood, I have a very strongly held belief that now=forever. If I feel f*cking miserable? It's going to be like this forever. If I feel f*cking amazing? Ditto. Both are lies born of living in the moment. Works great when there's an actual emergency, there is no past / no future, only now ; works bleeding terrible in normal life.