The atifacts, both in the black background, and on the watch, are a distraction to the overall image. A good choice of phrase, but by the centred subject, and the crop, the image doesn't really appeal. Taking this on an angle, or something, might have apealled stronger.
In my belief there are more things that contribute for a great motivational/de-motivational poster:
Idea/creativity: 3
Quality of the photo: 8
Artistic viewpoint: 2
Frame/borders: 6
Appealence of the font: 5
Average: 4.8 (5)