"When you are exasperated by interruptions, try to remember that their very frequency may indicate the value of your life. Only people who are full of help and strength are burdened by other persons' needs. The interruptions which we chafe at are the credentials of our indispensability. The greatest condemnation that anybody could incur - and it is a danger to guard against - is to be so independent, so unhelpful, that nobody ever interrupts us, and we are left comfortably alone."
from The Anglican Digest