Re-Writing

I've been so uninspired lately, and I honestly have no clue why. I feel as though I've written so much fan-fiction that writing actual original fiction has become so bloody hard. Which brings me to my problem of re-writing stories that I've rewritten several times already. I usually have new ideas or new inspiration for them but it gets a little boring when you re-write the same fiction over and over again. I even do it with my fan-fiction and it just feels like my writing side has completely dispersed for no reason other than lack of creativity. It sucks because I know I haven't lost creativity, I lost the confidence in putting the idea into words. I can completely write this entire story in my head but when the time comes to actually write it down I seemingly can't write worth shit and just it turns into a big error flop and I get so frustrated. I feel like I want to stop writing for good because I can't get anything to match what is in my head and I hate it. I think there is just too much going on and I simply can't focus. Does this ever happen to anyone else or am I just lonely in this little problem circle?