Dream?

My brother (33 at the time) had been struggling for over a year with PTSD and depression from something that happened to him. One night he was at a bar and drinking a lot, his ideas of suicide were flooding his mind that night and at the bar drinking, he decided to do something and he told his friends to watch him and he went to sleep at the bar and he had a dream that night. He said that in this dream his grandpa came to him, and he was in an empty field, his grandpa told him to stop drinking and to get his act together, and dont kill himself, his grandpa said that if he kills himself that he will miss out on great things in life. My brother said when he woke up, he went home that night and threw away everything that was causing him his problems. He said it was very realistic and real, and if it werent for that dream, he wouldnt have been here today if it werent for that dream. He said it was very realistic and at the time, he was already in his mid 30s and he never had a dream like that before, and he was confused, but it helped him in a big way and if it werent for that dream, his life could have been very different. What are your thoughts? Was it a dream? Was it something else? ***Great Spirits***?