Writing is a fickle thing. You love it, but you also don’t love it. If you don’t know what I mean, then you probably need to write more often.
One of my favorite writing quotes is by Anne Tyler: “If I waited till I felt like writing, I’d never write at all.”
Writing every day for NaNo WriMo is one of the hardest things to do. The first week is usually great because you are excited about your story. The second week is awful. Sitting down for multiple hours to write is almost painful. But, if I didn’t spend those hours dully tapping on the keyboard, I most likely wouldn’t have written five books.
So, although getting yourself into the writing mood is easy some times and impossible others, you need to write nevertheless. Looking up writing prompts on the Internet can be a great thing. You get practice writing, and you may just end up with a story idea.
All writers aspire to be great, but the only way that can be achieved is by writing. So, I urge you to sit down with some paper or a computer and dully tap on the keyboard for a while. The experience most likely won’t be enjoyable, but I promise that the outcome will be.