At the end of the video, the lad indicates that he'd like others to know that they may have lived before. Well, I'd like to thank him for his persistence in getting his connection to his past life sorted out. And a very well done to his parents for being discerning and compassionate. Some parents might have just told their child to "cut out the nonsense" when the child made a reference to an experience from a previous life.
All of use have lived many, many lives already and there's many, many more lives to come. The idea of having lived before is not something that Scientology requires or forces anyone to believe. When people receive enough Scientology counseling, they just see for themselves and the facts are compelling. Check out an earlier post I wrote on this most intriguing subject.