I agree with what others have said about carrying and drinking. Even if legal in Florida, it's a terrible idea. As far as your nervousness about carrying, I suggest two things. First, really evaluate how well you're actually concealing the weapon. Does it print or bulge, even slightly? Get in front of a mirror and bend, twist, and squat. Can you make out the grip? Try different concealing garments: polo shirts, oxford shirts, light and heavy jackets. Dark colored shirts, with a pattern or plaid or some kind of design, are always prefferable to light-colored plain fabric. Fortunately, everybody is carrying cellphones, Blackberrys, and Leathermans these days, so a slight print can be overlooked. Have a ready excuse if you get spotted printing.
Secondly, and I highly recommend this, just get used to carrying the gun, beginning around the house. Put it on, cover it up, and do the dishes, watch TV, whatever. Just get used to it's weight. Find out how much more clearance you need now to go through a doorway without clanging against it (you'd be surprised.) Figure out which notch on your belt is the right one to hold everything stable and still be comfortable 10 hours later.
And welcome to the Sheepdog Club!!