All graphic artists go through this at one time or another. Well Photosphere has come up with a neat little solution for this problem.
Photosphere has an extensive library of images that can be purchased on-line and used immediately.
The images are very high quality and diverse. There's really not a whole lot I can say about Photosphere, as it isn't software with features that might be discussed although the photos are beautiful and plentiful. The only downside is that there is no exclusivity of the images. So it is possible that any image may appear several times in different ads, etc. So I would suggest that when you use these images that they be altered in some way to give them a completely unique look or at least appear as a variation on a theme.