How do i change my sleep habits using melatonin?

Nighty night: Take melatonin at least 1 hour before bedtime. Remember good sleep habits (limit caffeine, no exercise late in the day, unplug from electronics at least 1 hour before bedtime, no glowing lights near bed). Sweet dreams!

Sleep habits: Get up same time each day, do not lay in bed beyond 15 minutes if still awake, stop caffeine & alcohol & tobacco & stimulants, no daytime naps, exercise early in the day & not at bedtime, avoid evening stimulation, hot bath soaks before bedtime, avoid large evening meals, practice relaxation, maintain comfortable bedroom conditions.