Thank some time and try something new.  Try something that your never really tried, or something that you only do rarely.  Like for me today, I played around with the concept od abstract painting.  I really only did this to try to get some creative juices flowing.   And ended up loving the results.  I am very pleased and I strongly suggest that if you are facing that creative brick wall.  Then grab what ever is near by and try something outside your comfort zone.  Happy painting.