We decided to persevere through hard times by mostly annually checking 'is tech X / market X / milestone X being reached?', and then ahead of time updating the same 'in 1 year, will...'. Beliefs got validated, we went from default dead to default alive, and now growing & hiring without really caring about the frozen capital markets beyond how to help our customers through their side of it. Especially in something like category creation and deep tech, this can be a long marathon.
But it also comes down to personal goals. If I was in it for the $, we would have been Google employees years ago and many m&a offers earlier. Shutting down can be the right move, so depending on the goals, different questions to ask.