Do not watch TV and play computer games too much and stop drinking and using drugs (if you do it). It will make you depressed really fast which is big problem in isolation. Focus on positive things and try to contact your family as much as possible. This is also great opportunity to read or to learn new things like cooking or you can try to do something about current situation - sewing face covers, 3d printing face shields or whatever suits you. And the most important thing is to not pressure yourself too much. If you really are not in the mood to do something just postpone it.