What can health care professionals and friends and family do to help OCD sufferers more?
Be patient: if the person's trying to challenge themselves and their beliefs/obsessions/compulsions it will take a lot of energy and so it's important to support them with patience as having an 'oh get over it' attitude will just stress them out further and put back in their plans to try to move forward and challenge themselves.
Be caring: harsh attitudes and criticism will go no way to help the person
Encourage them to keep up their hobbies and other positive aspects of their lifestyle
Ask them if there's anything that you can do to help (within reason - things that reinforce compulsions aren't helpful) that can be anything from making them a cup of tea when they're most stressed, a telephone call to check in, a cuddle (obv not the health professionals) or any other help that can ease stress in their lives giving them space to challenge their ocd and have time to relax and enjoy themselves
Are you going to achieve yours?