how can i fix this picture?

[B K]

After having looked at the image in Photoshop closely, it would appear there is motion blurring or camera shake because the shutter speed was likely too slow. More likely a combination of both.

It can't really be fixed, however I have tried to apply the anti shake filter in Photoshop CC - I guess it's a small improvement, but still not great: http://i.imgur.com/ElsCrMI.jpg The Photoshop CC anti shake filter does work to a degree on slight motion blur, but your image is really just too blurry.