I’m not sure now where I got this link from (let me know if it was you!), but these tips are both useful and (sometimes) funny.
This is probably my favourite one (thanks Margaret Atwood): “… there’s no free lunch. Writing is work. It’s also gambling. You don’t get a pension plan. Other people can help you a bit, but essentially you’re on your own. Nobody is making you do this: you chose it, so don’t whine.”
On that note, back to it!