Stop. Calm your mind... then follow your impulses as they arise, without question or judgement.
Sounds easy, perhaps, but it's not. From an early age we are taught to think before we act and to control our impulses for our own good and for the good of others. However, sometimes this control and second-guessing keeps us from thinking clearly and creatively. It can be very challenging to let yourself go. You may feel silly or foolish-- these reactions are the hardest to overcome. Take a deep breath and allow the Goddess within to direct you.
Sit. Stand. Lie on your back in the dirt. Dance to music even you can't quite hear. Spend uncounted minutes staring at the edge of a leaf. Poke your own leg with a finger over and over just to see what it feels like. Close your eyes and sing as much as you can remember of a commercial jingle you heard as a child. Do whatever you find yourself wanting to do.
No one is watching, no one is judging--except you. Let go of the adult prejudices about "wasting time" or "being productive" or "being silly." Take some time to view the world from the completely self-centered, unself-conscious, _wondering_ viewpiont of a small child.
When I found myself blocked in my writing, I sat down "to meditiate." Very mature sounding-- very calm, sedate, and mentally disciplined, no? But what did I actually do? I decided instead to let myself go. To listen to the frustrated, blocked part inside me and release it.
And so I picked up a plastic, jointed snake I have on my altar. And I held it in my hand and ran my fingers along it, tracing the curves, over and over-- my mind wandering aimlessly...until that suddenly seemed boring. So I put it back. When a small picture caught my eye, so I picked it up. And I held it up close to my eyes, so close that I could put myself in the scene and it was all that I saw. And I just looked for a while...and put it back down... Then I saw leaves falling from the tree outside the window-- bright, yellow, fall leaves. So I went outside. And I lay down on my back on the ground under the tree in the dirt and let the leaves fall on my face and stared at the sky...until I'd had enough of that....
Until I realized that I was no longer blocked... that the words I'd been looking for were right there, ready to come out the moment I sat back down.
Take time to connect with the creative within you. Sometimes you know what you need. Learn to take time to trust that little voice deep inside.