Brilliant idea?

Can't really call this 1 brilliant,the idea of starting my own blog came to me while i was watching the movie Julie&Julia,what i would put in it i have absolutely NO clue..this is my 3rd 1 so far and counting...The only question now is how long will it take before i give up on this 1.
The Barney character on How I met you Mother always does it and he makes it look pretty cool..is any1 even reading this?