My son is one year old, and I have just finished reading Mary Sheedy Kurcinka's "Raising your spirited child" on the advice of one of my La Leche League leaders. Though my son does not 'melt down' often, and is not overly sensitive (that I've noticed), the tempermental traits of perceptiveness, persistence and intensity definitely fit for him, and I found that the chapter on Bedtime and Night waking really hit home.
I am joining this group, because even if my son turns out to be more spunky then spirited, I love the positive language and proactive approach Kurcinka uses for handling challenging kids.