Sometimes, the key to a great photograph is as simple as a new and different perspective. Thinking outside of the box allows you to grow as a photographer, and playing with the depth of field in your photographs is a great way to achieve this.
My dog loves to go for rides in our boat, and loves watching us waterski even more. The dog fills the foreground of this photo, becomes the subject and gives the viewer context (his relationship to the skier blurred in the background).
The fun about playing with depth of field is how the context of the photo changes when the focus is shifted to the skier, leaving the dog blurred. Now, had this blog post been in the back of my mind while shooting, which it wasn't, I would have taken a photo with the skier in focus to compare...
This whole shift in perspective lesson can totally be applied to life, but that's a post for another day!