Today things will seem much bigger problems than they are, put things in perspective and see the bigger picture.
Things will appear much bigger and much worse than they really are today, so do not get yourself into a flap about something until you have considered it calmly. Try to step back and put things in perspective, this is not such a huge deal and if you look at the bigger picture you will see you can cope with this much easier than you think. Do not waste your energy worrying about it.