1) Last night, I timed myself for one hour, to see how many words I could write on an idea I had in my mind. The result: 1259. Number of words per day required to total 50,000 at the end of 30 days: 1266.
2) Sometimes, I try to write based on my own experiences, and it comes out very flat and uninspired. Last year, my narrator in my NaNoWriMo attempt was based on someone completely unlike me, and actual events I didn't know much about, and I was amazed where my imagination took me. I might never write autobiographically again.