Based on the novel that I learnt which is How I met myself, by David A. Hill shows that the is determination. It is shown when John got knocked out by a man with the same face of him. John quickly chase the man until at a cafe.John also ask the owner id he saw a man with his face. John also search in the toilet.
Next, John also make a research about the doppleganger. He also make a research at the Budapest library for the tragedy that happened on the 18 of January. He finds out that theres a tragedy of a woman and her daughter died in cellar when a bomb dropped by the Russian that destroy the whole cellar.
Finally, every cloud have a silver lining because of John's doppleganger helped John's family to stay away from the cafe and his family still alive.