1. Never Try to be Perfect
Do not think that everything should be done perfectly. What you should think about is in which kind of things you have full assurance of success. Then concentrate on them. To know that happiness lies in contentment helps you reduce mental pressure as well as prevents you from dying in a young age.
2. Slow down the Tempo
When things are in a total mess, you can try to slow down your pace and avoid to those listing unimportant things in your itinerary to treat them coldly.
3. Make some Concession
Even if you did completely right, it will not degrade when you make some concession. As proverb goes:" Tolerance makes space." Something can be done better if you treat them coldly because if you fall back a step, you can get more space.
4. Calm down no Matter What Happens
One of the measurements of the maturity of a person is whether he or she can stay calm when something happens. To deal with something calmly is beneficial to the reduction of stress.