Comfortable has nothing to do with carrying a firearm. I have been carrying all day every day for over 30 years. Comfortable has never been part of the equation.
Carry position depends on your physical activities, physical condition, what you are carrying, where you are carrying, and what you are wearing.
Guiding principle is you need to carry in a position that allows you to defeat cover garment and draw in under one second in a position that allows you to draw with support hand in the event your primary hand is out of the fight.
I have 3 carry positions that satisfy this guiding principle - the one I choose on any given day depends on where I am going, what I am doing, and what I am wearing given the activity, location, and weather.
Avoid carrying off body in public ... hope this helps.
Stay safe, be dangerous.