Well that's the other part of carrying, you have to change things, like your dress, your movements, your tactics and techniques, etc. You will have to wear pants a couple sizes bigger for iwb, you will have to wear larger, more printed shirts, or shirts outside the pants or wear a jacket or vest(a vest screams CC, btw)....you will have to squat down to pick something up vs bending over and exposing your gun. You will find yourself sitting at a restaurant facing the door and looking for escape routes . You will spend time thinking about "what if" scenarios. You will wait for the next elevator rather than getting into a crowded one and chance having someone bumping into your gun.
Some have said they have a drawer full of holsters that don't work, I have a drawer full of holsters for different situations. No one holster fills all situations( well, My Don Hume iwb w/ clip almost does). You'll use a different holster in the Summer, with shorts and t-shirt, than you will in Winter, with coat. I use a different holster in competition than I do CC. I carry my pistol appendix carry all the time, as it's the fastest position. In competition, it has to be at 3 or 4 o'clock, either iwb or owb, but concealed.
Freedom comes from those who fought for it
USMC, NRA, IDPA-SO, GOA