The Prince of Wales has opened up about a particular experience he shared with brother Prince Harry and mother Princess Diana when he was a child, which William says helped him realize not everyone grows up with the privileges he had. The 42-year-old’s upcoming two-part ITV documentary will follow Prince William and his five-year program called Homewards, where he tries to prevent homelessness in the UK. The heir to the throne has said he isn’t trying to tell the world how to end homelessness, as each nation has their own issues, but show ways how to prevent it from occurring in the first plac…