A lockdown is obviously not an enjoyable thing, but it is necessary to flatten the curve [^1] and it's downsides are less severe then it's benefits if done correctly.
Keep this in mind as the situation continues to evolve. Stock things in your house which bring you joy (good food, games, good books) and do your best to spread confidence to others around you. If you have enough space to get in some exercise, even if it's just pushups and situps, do so. If you are working from home, do your best to have a clearly defined time for your work and separate your working space from your leisure space as much as practical. If you've been thinking about writing a book or starting a new blog, now is a good time to do so.
It may not be enjoyable but it is necessary. Make the best use of this time you can.