Daytime sleep routines

Jessa
My one month old is really fighting daytime sleep lately (sometimes he'll be awake for EIGHT HOURS) before we can get him to sleep. We try all sorts of things (swaddling, white noise, swing, baby carrier, dark room, etc.) but haven't managed to find just the key yet and I'm looking for new ideas or patterns. 
So my question is: what do you do to get your little one to sleep during the day?