I was also afraid of rudder, especially my DX6i is the heli version so the left stick is soft not ratched, so it is almost imposible to apply rudder without changing throttle. I can do it a lot easier on the sim. So when the winds were above 9 MPH or crossed I went home sad.
This took a lot of flying time away from me so guess what?? I practiced and practiced on the sim. One day I logged one full hr of touch and goes on diff wind speeds and headings. Now I can use rudder to land and I can fly with winds.
Ailerons are useless when you are close to the runnway, in fact they can damage your precious model.
We are all afraid at the beggining thats why this is a great hobby.