Spent most of last year on a project that got cancelled in January. Got moved to a new one that doesn't have much actual work, long stretches of waiting, scope

Spent most of last year on a project that got cancelled in January. Got moved to a new one that doesn't have much actual work, long stretches of waiting, scope shifting, and nothing is shipping. I'm digging myself into a hole of self-doubt. I wish I were working on something with real users! Of course, I'm doing interviews, but it hasn't been an easy ride. If I were fired I'd have more time for prepping, at least.