Suppressed frustration

Playing a bit with water in the tub
The first time I dipped my head under I suddenly remembered why I never swim face-up under water, but stuffing the nose full of cotton did the trick

Post-processing:
Lightened, adjusted the contrast and the white balance in camera raw. Added a second version of the picture as a layer; converted to black and white and added split toning, (yellowgreenish and blue), in camera raw - and set the opacity to 50%.

Added black and white layer set to overlay (70%), adjusted the curves (turned the red and green channels a bit down and the blue a bit up, and adjusted the contrast) and set it to overlay (100%), copied the curves layer and set the blending mode to normal (40%). Dogded and burned a little bit.