A little every day adds up to significant productivity. Take one hour per day for personal reflection. Rest is what we need. It rejuvenates our mind, body and nervous system. Take hourly, daily, monthly and yearly breaks.
Sleep cures many ills.
If you have difficulty sleeping, find out why and fix it. Tension left unchecked becomes either anxiety or anger. Understanding another's point of view can help us to accept rather than tolerate them. Walk a mile in their shoes. Virtues and vices are relative to the person.