Is it best to tell the truth, or alter the truth so that i don't get as harsh of penalties for this?

The other day, i got pulled over and arrested with a friend for possession of marijuana, and possession of Controlled Dangerous Substance, and for Drug paraphernalia in the car. i was the driver of the car, and my friend had a grinder but blamed it on me that it was mine. also, the officer found two bags of weed in the car...so we got arrested and sent home that night........So, for those charges, and being the driver , i hope i just get either fines, community service, or both...cuz i dont want my license taken away, but what do u think the judge will rule? oh by the way im 19 and never got arrested b4 and i live in NJ....the cop could smell weed in the car, but theres no evidence that they have that i had smoked; SO, should i blame it on my friends or should i tell the truth that i smoked?