Clicking sounds are never good in a hard drive. It always indicates some sort of hardware failure or mechanical problem.Here is a guide on how to initially diagnose your issues with hard drive problems. Diagnosing Data Recovery

Ultimatley you need to assess the value of the data on the drive in order to determine if you need recovery help. If the data is valuable then you will want to consult a professional that has the proper environment to safely reocver your data from the failing drive. Every move you make will ultimately determine or lesson the chances for successful recovery.