Suddenly, there's too much going on at work, too much going on at home, and too many stresses and demands in our relationships. At that point, we feel like we're "supposed" to be doing it all at once, even though we know that's physically impossible.
It can happen easily, especially for people who have a strong sense of responsibility and a hard time saying "No" to requests.
Of course the answer is to learn to say no, then to prioritize our tasks and delegate some of them to another person. But... that's not always easy. Some of us take responsibility so seriously that we feel we must handle every small detail.
Keeping on in that vein is a good way to bring on exhaustion and physical illness along with mental distress. And then, when you suddenly can't cope, the people around you don't know what to do, because you've made yourself indispensable. Remember that your first responsibility is to yourself - and that you'll be of no use to the people who depend upon you if you have an emotional or physical breakdown.
Turn to the flower essence Elm for the ability to calm your mind, re-balance your energies, and give yourself permission to give some of those responsibilities to someone else.