When something does not go how you planned today do not get angry, find ways to get back on track.
Something wont go quite how you hoped or planned today and this can be quite frustrating for you. When plans do not pan out or things do not go how we want it's annoying, but control your temper and do not erupt, it is not the fault of the people around you. Instead, look at what you can do practically to get back on track or to adapt to the situation.