I think every blogger reaches that point where they just don't know what to post or whether they even want to keep blogging. I definitely have. Last year I lost all my motivation to blog but luckily I found posts like this one which kept me going. So hopefully if you're reading this because you're feeling a bit down with your blog, this can pick you up a bit!
Take a break.
If you're not feel motivated enough to write good quality blog posts then all you need to do is take a break. You'd be surprised what ideas pop into your head when you're 'switched off' and for me, they seem to be the most popular posts on my blog.
Keep a notepad nearby.
I always keep a notepad (or failing that, my phone) on me to jot down random ideas that spring into my mind when I'm out and about. The worst thing is coming up with an awesome idea and then letting it disappear because you forgot to write it down!
Don't overdo it.
Just remember that readers will rather read one exciting and well put-together post rather than three or four average posts. It's worth only posting once or twice a week if it means your content can be more creative and interesting to read.
If you're not feeling motivated enough to write but you still enjoy taking photos then why not use these to create a photo diary on your blog? Not everyone follows blogs for the writing so a more photographic blog can still receive plenty of positive feedback, and it's a more laid back way of doing what you love!
Do what you love.
If you prefer writing about what you got up to at the weekend rather than what your favourite lipstick is then write about that! Blogging will seem like less of a chore when you're blogging about what you love. It will also mean you've a million more ideas in your head which you feel more passionately about!