Studies have shown that those people who react to stress take far longer to heal. This is because stress hampers the immune system and keeps it from working at its peak. Anxiety increases drastically when we feel we have no control over a situation. Maybe it's listening to relaxation tapes in your hospital bed or doing mild exercises.
Some people like to know as much as they can about their procedure and what to expect.
In that case, don't be shy about asking questions and requesting information. Others prefer to just hope for the best. If that's your style, be sure to tell well-meaning friends and family that you don't want to be bombarded with information. Think about the outcome of the procedure and how it will help you. Consider how your life will be improved because of it.