The thing about writing is that, it doesn't always have to topical, which is the reason most writers experience writer's block, especially hive bloggers.
Humans are emotional creatures, we get moody a lot. At that moment you are experiencing a writer's block, it might not be because you don't have ideas to pen down, it is just that at that moment your mind is not willing to contribute to the topic you have chosen.
Whenever you experience writer's block, don't try to write on a topic but write what you are feeling, write out frustrations, don't try to control, just let flow out. It might be gibberish at first but after you are done poring out what you are feeling at that moment, then you can come back, edit it and give it a befitting topic.
Believe me, you will surprised, when you see the master piece you have crafted without making any effort.
Music and movies also works for me too, it helps me control my thoughts and also assist in coming up with good ideas.