Be smooth, and get good at judging your corner entry speed. After you are committed in the wet, you're pretty commited.
Get good wet tyres.
Slowly go harder and harder as you get better.
Smooth feels slow, but its the fastest and safest way.
I love driving in the wet, you're still driving on the same roads, in the same car, with the same equipment, but just different conditions. I get more of a rush in the rain, smaller margin of error.