Monica Sandoval, 17, knew she had to keep a positive attitude if she was going to beat cancer for the second time. The West Hall High School senior said one of her first experiences with the disease involved a child life specialist at Children’s Healthcare of Atlanta Scottish Rite. The specialist told her that if she decided to just sit in bed all day she wasn’t going to get better, she was going to get sicker.She took the specialist’s advice to heart and started encouraging other children in the hospital to do the same.