I respectfully disagree. You can be "competent" but not yet carried frequently enought to be "comfortable." Competence comes with learning and practice, but comfort truly only comes with successful and demonstrated experience. You will always have some discomfort the first times you carry until you do it a few times and end up NOT shooting yourself in the leg.
The definiton of competence is sufficient skill and knowledge.
If you have those, what do you have to be uncomfortable about?
In your words, if you practice and learn you are developing succesful experience.
The two are completely intertwined and one does not exist without the other.
The answer for the OP is obvious: He needs training. If you look at some of the other questions it is clear that the OP needs basic familiarization with his equipment thus it is clear that he is not yet competent with it. One can do that on his own or find a competent instructor, of which there are many in this state.
Michael Brown