Too Much To Write!

I currently have a serious problem, I have far too much to write! To a writer, that may sound like a really good thing, so there's always something to write. But currently it's causing a problem for me - I can't figure out what to write and more importantly, when. 
Currently, I have this blog, my vlog channel, two fan fics and my Wattpad one shots to write, and it is scary to think about. Really, it's scaring me a bit to think about it all! Now, as a rule, I prioritize my fan fics, as I'm posting them on a regular basis. This means that both of those are my go-to with writing, but then that means I forget about everything else. Take this blog for example, it's been three weeks since I wrote an actual post, which is not what I wanted for this! I wanted to write a blog post a week, yet this hasn't happened. The same can be said for my youtube channel, and my Wattpad story.
The youtube channel is fairing a bit better, as I've managed to (for the most part) get a vlog up a week for a while, but the Wattpad story is suffering like this blog. And I hate it.
One of my pet hates is leaving these things for weeks on end, leaving anybody possibly interested wondering if I will ever update again. As a general rule, I don't post anything I don't plan on finishing, but others don't know that, so I am potentially losing readers by not updating regularly. But I really do forget to write these things, and if I do remember, I have nothing to write! It's a terrible catch 22, but that's how my brain is working right now.
So what do I do? Do I dedicate a day to write each thing? Do I set myself reminders? That's no promise for me to get something up. I don't know what to do! AHHHHHH!
Currently, I'm just hoping this problem doesn't get worse when I get back to uni, when I'm so exhausted I can barely think straight. Though, alternatively, I could be given some inspiration from whatever my lecture has been about, or something else that has happened in the day. Also, I'll be on long train journeys, so I could have some time before I get too tired to write. Who knows? I sure as hell don't! I'm hoping for the best, but there's no promises, as there never is.
Oh, the writer's life, such hardship...