Being creative is not something that can be forced. It has to come naturally. which is a funny balance with our modern education system which places deadlines on creative outcome. I notice that because of my teaching.
When I have a creative block, I try to work through it. I try to find something new that will inspire me, and I often find may inspirational things. But in the end the thing that sparks the actual beginning of a new creative set of work is often times something completely unrelated. It is like when I am trying really hard to figure out a way to build a website or some other technical process that I sit in front of my computer and try to figure out. And then when I leave and stop thinking about it I figure it out. Often times the most creative ideas come when you are actively not thinking about being creative. Forcing it does not work for me. Maybe it dos for some people, but I am not one of those people.