Sleep when the baby sleeps.  But not when you're driving aimlessly to keep him asleep, or rinsing the sour tang of formula out of tiny clothes, or talking a walk with the stroller because you haven't seen the outdoors in three days. Sleep when the baby sleeps, but not when you're making dinner or being interrupted in the shower again or when your husband is asking about your day which revolves entirely around doing for others.  Sleep when the toddler sleeps, but not when she's teething or refusing a nap or finally sleeping and this is the only blessed hour of silence you have.  Sleep when the children sleep, but not through stomach viruses and weird sounds in the night, thirst or bad dreams, hacking coughs or nosebleeds. Not through repeated night terrors, burning questions, and mornings early enough to scald your eyes. Sleep when the pre-teens sleep. But not when they're at their first sleepover or swimming in heartbreak or struggling to find their tribe. There is ...