Be patient

Be patient. Patience is the begetter of calm. Impatience is the source of agitation and turbulence. Impatience says "I want it NOW" and when "it" doesn't appear now, you're liable to lose your temper and let the blood pressure rise. Impatience is often linked to unreasonable expectations about the world and other people (you expect too much of both yourself and of other people) and is often linked to perfectionism, which allows of no space to make errors or slow down. A calm person, on the other hand, is fully aware that errors occur sometimes and that speeding things up is liable to bring on errors, not alleviate them.