getting baby to sleep through the night

Any ideas on getting a baby to sleep through the night?

My almost four-month-old daughter was sleeping pretty well but has completely regressed. She also won’t nap for longer than 45 min to an hour. Any ideas?

hi ,
you must make the room very dim and avoid eye contact with your baby.
a very good website is www.babycenter.com which gives great ways to deal with every other problems regarding babies.
good luck