If the path to the page from your brain (or whatever magical place writing comes from) is a drainpipe, there are all sorts of things that can gunk it up. The psychological equivalent of Drāno here is understanding what they are, not giving them so much power, and allowing them to pass freely.

One of these things is something that every writer encounters in some form or another: writer's block. You've made the time to write, and you're trying to, but it just isn't happening.

The first thing to do when this happens is determine the scope of the problem. Do you a) not know where your story is going, or b) know where you're headed, but not how to get there? In either case, it pays to take a step back and think about your goals rather than the next sentence.

Where a) is concerned, it's really not all that surprising if you're struggling to write when you're not sure what you're working your way up to. I'd go so far as to say that the purpose of most writing is to build suspense or otherwise lead up to later points in the story. That being the case, if you don't know what those points are, whatever writing you manage to do risks being directionless and certainly isn't going to come easily.

b) can be a little trickier to resolve. In this case, you've done a reasonable amount of planning (or at least thinking) ahead, but it's still not helping you to fill the space between where you are and where you want to end up.

First, check that you're not stuck obsessing about your work at a line level. If there's a particular sentence, paragraph, or scene that just won't come, earmark it for later and move on. Difficult for the pedantic among us, yes, but a powerful way to keep you writing (and for some, the solution to writer's block once and for all).

For either concern, take stock of things you want to happen in your manuscript, and make the next thing you write about something that advances that agenda. Want two characters to end up together? Write a meet cute or a bonding experience between them. Planning to have two nations go to war? Show a moment of tension between them. Need to get your protagonist from City A to City B? Have a scene that revolves around them making preparations to leave.

Sometimes, the solution to writer's block is to stop writing and start thinking. If you develop your setting, plot, and characters enough, you can throw just about any situation at them and have a decent idea of how they would react—and at that point, the story almost writes itself.

Failing that, you may simply be lacking inspiration. Go out and watch a movie, or read a book in a similar genre. Talk to your friends and family about their lives, or experience something new for yourself. Even the most fantastical worlds are full of mundane, everyday experiences that have been adapted to suit the setting.

As demoralising as writer's block can be, the most important thing to do to combat it is to not give it some grand meaning or significance. The fact that you're experiencing it doesn't say anything about you or your work; it's something that all of us go through, and it's only the end of the world if you allow it to be.

Relax, take a step back, look a little further ahead, and you'll be fine.