When I'm talking to myself, how should I refer to myself? This sounds like the dumbest question ever and I guess that's what the sub is about so here goes.

I talk to myself often, and when I do I refer to myself as "we", for example today I was looking for something, and I said "we need to find this", instead of "I need to find this". 

Does this mean anything? Is there anything wrong or different if I use "I" or "we"?
Again, silly question but I'm interested to know.