7 month old screaming and won't sleep.?

[Jai'sMommy]

My daughter is 7 months old and doesn't nap often, she may take a 30 to 45 minute daily and two or three of them a day and then there are days she may sleep an hour. Thing is she doesn't sleep and she then becomes whiny, cranky and everything startles her, or she won't let me out of her sight without very loud screaming and crying. I am a SAHM and it is job to be there for her but it is extremely trying some days and I need some help on what to do to get her to sleep please! Any Mommies have any advice?