You should normalize the situation as much as possible, always within the possibilities of each case and the degree of their involvement and/or severity in the symptomatology and associated processes. Meet a diet high in cholesterol is key to achieving a stability at the level of behavior and progress of the improvements in conditions associated to the disease (improvements in the growth, improvement of the emotional stability of the affected, appetite, social development, sleep, also improvements in the photosensitivity, etc.).
You can be happy with syndrome, Smith Lemli Opitz if you have the right support and the environment to further the understanding of the disease and enable a proper treatment of the symptomatology associated, to facilitate the development and be a "hand" that will help and guide you is very important for people affected by ONLY be as happy as possible.
To be happy with the syndrome just be a happy person, the happiness does not depend on the diseases they have or don't have, but of our own interior, of our education, and respect.