Work stress!!! Help please

Ok so work in fast food at the moment and I'm 22. I get good labor hours and the pay is good for what it is but I hate the job. It's stressful, I work 3am-2pm one day and 1pm-8pm the other. So a friend of mine said I should look for another job. Today I had an interview and got hired on the spot. But the job is nothing like I thought I was going to be and it's almost $2 an hour less than I make now. Me being the stupid young adult I am played along and accepted the job before learning all the details. I think I'm going to tell the implore that I can't accept the job in the morning. I'm sorry if you read this entire rant. Just needed to vent.