Know what your employees are doing the next quarter/month/week/day
With remote work, all the basic management rules double in power. Charisma, personal qualities, and informal interactions in the break room become irrelevant. Management skills and self-discipline are the two things one can rely on.
Unfortunately, self-discipline cannot be improved on the spot — you have to work with what you already have. But management tricks are easy to learn and use right here and right now.