brett,I would guess that most of the members of this forum understand what it is like to be pulled in many directions at the same time.
Taking care of yourself is your first duty so the next time someone calls on you to help with their work, say no without feeling guilty and do not feel you have to apologize because you have done nothing wrong.
Our health and happiness should always come first. Because when our cups are overflowing we have more good stuff to offer others. By giving to ourselves first, we are honoring the fact that we are here in the Universe to serve a purpose that will ultimately create a ripple effect and serve those around us.