Carrying a gun with you at all times can be a cumbersome task if you don't have a quality holster. There are only so many places you can put the gun without it being completely exposed, which may get you into trouble. It's also uncomfortable to try and carry your gun without a holster; if you keep it on your waistline, then you will not be able to sit down without it jamming into your stomach. There are holsters you can get which will keep your gun securely strapped to the side of your waist so you can sit down and stand up with no problems at all. You can even get a holster with a strap on the back so it keeps your gun snug in the holster. A strap ensures that your gun will never fall out of the holster, even if you were jumping up and down.
If you are looking for the best concealed carry holsters, then you need to see some kydex IWB holsters. They make some of the best concealed carry holsters on the market because of their durability and ease of use. You want to get a holster that will not break if you bump into the wall and one that is easy to snap on your belt. You don't have to get a holster for your waistline either, a quality supplier will have chest and ankle holster available as well.
The type of holster that is right for you will depend on your personal tastes and what type of gun you have. You won't be able to keep anything large on your ankle because your pants will probably not cover it completely, or show a large item on your leg which will be obvious.
There are concealed gun holsters that keep your weapon on the outside of your pants, but you need to be careful when doing this. If your jacket opens and people can see your gun, then you are breaking the law if your state does not allow open carrying. An outside holster is always considered open carrying unless you are wearing a jacket that also conceals it. You can speak with employees at a gun shop to get more information about the law in your state and what is allowed so you don't get into any trouble when buying a new holster. You will feel much better carrying your pistol once you find a holster that is comfortable on your body.