This is what I wrote somewhere here recently (and I thought it was a lot shorter). I will make it shorter. Hope it may help someone.

It is balancing the "advantages", thinking and not doing (I really think of depression as a very difficult puzzle, which you should try to focus on: something, just something intangible and subtle, some emotional-sensory dynamic, went wrong and you have to figure out what and in case of post-mania/-psychosis depression you just need to recharge physically and you should make sure nothing in your thinking might be a bit disordered/delusional still), and the disadvantages, understimulation (which could very well be a cause of depression to begin with, as well as overstimulation, which might be due to lack of freedom, to slightly lose some control, you afford yourself, clinging too much to some routine, and fear for losing it, which is caused by the same). That balance should be a purely rational decision, since your intuition/emotions are useless/clouded.

So take your time to experiment with that balance. Allow yourself more time, but use that time by thinking more constructively, if anxiety keeps you in (mental) paralysis. But gradually try to do anything more stimulating, which is of course really anything, more every day, allowing for some deviation (another balance).

If you escaped your depression, you should still very carefully balance under- and overstimulation, freedom and routine. Both cause anxiety: not enough or too much (self-)control. You don't want too many challenges or too much excitement either, both overstimulation. You can use your time depressed to make a plan that extends to that period.

I hope this helps. It might be obvious, but since obvious things might be missed when depressed, a reminder.