This may help some, and not others. In any case, it’s worth a try if you’re finding it hard to write about something:
Go to your kitchen and find your northern-most tile, look at it, and write everything you can about it. If you don’t have a northernmost tile in your kitchen, write about the step to your front door. If you don’t have a step to your front door, right about the top-left-most brick on the building across the street from you.
Find something small, specific, and tangible, and write about it.
And if you’re not interested in writing about just anything, but want to write about something in particular – let’s say you’ve already started on a Novel about your character Jackie Yamocho, but now you’re stuck and don’t know what to write about next – do the same thing. Write about the northernmost kitchen tile in Jackie’s kitchen. Write about the tonail of her pinkie toe. Her left eye. The skin on her forehead. The two nails resting on her windowsill.
Whatever you’re stuck on, find something small about it, very small and very mundane, and write whatever you can about it. Let it blossom from there.
This advice won’t work for all cases of writer’s block, but it will help with some.