The secrets to stay effective from my side are to always have a deadline in mind, have a good sleep and keep a good mood. : )
1. Keeping a deadline in mind could get me to start working rather than delay.
2. In order to have a good sleep, I would like to go to bed early and get up early. Then I have a higher possibility to keep my mind sharp for the whole day, at least in the morning.
3. Because I live alone, it is easier to get depressed during the lockdown time. I will go out for a short walk to see people walking their dogs and enjoy the nature view. This is very important and effective for me to get rid of depression and have a good mood.