If you let bears make you nuts, they will. Be smart, not paranoid and you'll be fine.
Right there. ^
There are two further subgroups of bears up here among the brown, black, and white that I didn't see mentioned - human habituated and not.
Things like cubs and food caches aside, I would much rather run into a NON-human habituated bear. They behave more like one would expect a wild animal to behave as in they typically want nothing to do with people.
I would be wary about relying on a dog. It can as easily be the case that the bear turns on the dog, in which case the dog's instinct will probably be to run right back to you with the bear on its heels.
If you follow "protocol," be aware of your surroundings, make noise while you're hiking (a lot of noise if you're beside running water), keep a clean camp, store food in a hard-sided vehicle or bear box, and don't try to pet it if you see one, I wouldn't expect a problem.
I have typically carried both a shotgun and bear spray. As I get older, if it's not hunting season, I spare the weight and just take the bear spray.
Even getting older, I still sleep on the ground, sometimes not even in a tent. I did almost get stepped on by a big ol' boar once, but it was more intent on hassling my buddy and his dog 50 feet away, who were camped in his truck under the camper shell. He had also left his cooler by the tailgate when he turned in.
This li'l lady, her cubs, and I met one morning at an initial distance of about 20 feet. We bumbled upon each other and both looked up at about the same instant. I swear she had an "Oh, ----" look on her face also, but I doubt she was as close to wetting herself as I was. I turned her around by standing my ground, yelling at her to get lost, and lobbing rocks in their general direction (not pelting them with stones).
Speaking for myself and not trying to sound like a Treadwell, I've always felt really honored in my close encounters with bears. Only twice in almost 20 years of living here have I really been worried by one.