Yeah man, congratulations. It's bloody difficult to pass first time here in the UK! Just remember; you're still a learner driver. Passing your test does not mean you're suddenly worthy or even competent on the road. I've heard so many true stories of people just passing within my school who've gone-on to lose their licence and/or wreck their car within weeks and (in one case) hours. 2, actually. Yes, you have to watch-out for other drivers, but don't get too confident all at once; there's a reason why you need to hold a full licence for 3 whole years before you're allowed to accompany another learner driver for example, or rent a car.
My test is this Tuesday! I'm 18 but i'm just not bothered about driving really; i've had lessons on/off since I turned 17, and I just go through whole months of not bothering to practice. I actually missed my first test about two months ago, I was an hour late, hehe. Just shows how much I care.