I think that most artists have their sources of personal inspiration and ways to fuel their passion. It isnt always direct and everyone is a little different. As for Myself, I find that the one thing that really rejuvinates my creative juices and gets me going artistically is the outdoors. Going outside for a walk, hike, or to go fishing always gives me time to think to myself and to just soak in all the things around me.
As a result I often leave the trail or the stream with tons of new ideas or just a great feeling of wanting to go make some art. Alot of this inspiration of course is in direct relation to being outside, and I love making landscape paintings and sketches.