What do you find to be normal? Is there even such thing as "normal"? If you were to choose a term more like "acceptable" or "natural" then I could answer your question. If talking to yourself is something you have done your entire life, then that simply is a sign of who you are, but don't take that the wrong way. If you ask me, I think it's humorous to know that you make conversation with yourself (I have friends who do that too, no joke). The knowledge of that even reminds me of Gollum from The Lord of the Rings (but I'm not comparing you with Gollum so PLEASE don't feel offended, if you are, then please accept my apologies). Anyway, if you do that because you don't talk to other people very much, I suppose there could be a bit of a problem if you yourself feel it's a problem. But it's a very interesting quirk that you possess and if you don't like it, only you can do something about it. You know, when I have one of my "episodes" people stare at me like I'm crazy (even my own dog looks at me like I'm crazy) but who can blame them? I really am crazy! Lol but it bothers me not, but surely I don't do that to get attention, it's just something I do spontaneously. Anyway, worry not what other people think of you. If you feel that talking to yourself a lot is a problem, then worry about it. Otherwise, if you don't mind talking to yourself like that, then find no need to worry. That's just my advice, if there's someone else's advice you like, then hey, I'm cool with that