I changed my bathtub taps from turn knob to push down handle. The problem is that you push down the hot water handle BUT I have to pull up the cold water handle. How do I change it so the cold water pushes down instead of pulling up. I feel that that is backwards and it is driving me crazy!

Try removing the cold handle, turn it 180 degrees and reinstall.

If that doesn't work, remove the handle, turn the stem 180 degrees and reinstall handle.