One of the exercises I shared with participants is the "One-Hundred Images" Exploration on page 37 of The Creative Photographer. In this exercise I suggest you find a subject and take one hundred photographs of your subject, in different lights, in different positions, at different angles. This is an exercise I consider to be akin to the writer's "first draft". There will be some photographs you will want to delete, but there might be some good ones, and every now and then, you may even get some great ones.
One of the retreat participants, Darla Davis, shared the above photograph with me with this note:
I thought you might like to know that the photo I sent you of the leaf stem with the dew drop came from the 100 photos of the same subject assignment. I don't think I would have found this image without the encouragement to keep looking deeper and differently at the same subject. I started out photographing the poke berries, drawn to the contrast between the green berries and the magenta stems. It was late in the 100 photos assignment that I noticed the little dewdrop on the green stem.
I believe that if this is the only exercise you ever do from my book, your photography will improve. It is an exercise in practice, in patience, and in seeing.