According to the diary, the man did not eat or drink anything for 24 days aside from a few drops of water. The last entry was from December 13th of last year. He left the diary to his daughter.
The diary, which starts in October, says that the man's marriage had fallen apart, he was unemployed and would not receive anymore unemployment benefits. His daughter had broken off contact as well.
The man is believed to have come to the tree house via a roughly 130 kilometre ride from Hannover. It is still unclear as to why the man chose the tree house as his place to die, however, the man knew the area well through his work as salesman in the region.