What does Misha believe his purpose in life is

I think Misha believes his purpose in life is love. Misha has little experience in life, so he didn't really know what love is although he showed it and felt it. He described his love for his new sister Janina, for he kept saying that although sometimes he found her annoying and she played many pranks on him, he was never okay to see her sad. He always wanted her by his side except when he was smuggling because this would risk her life. After Janina's mother died, Janina started losing weight quickly, became very depressed, and lost all her appetite. When she said she wished for a pickled egg, Misha risked his life and went to a place full of Nazis just to bring her what she wanted. He also loved his new family, the Milgroms, and showed that by constantly giving them from the food he steals and smuggles. He could have used this food to his advantage, kept it, or sold it, but he shared it with whom he loved. Finally, Misha's extreme love for Janina is obvious when he wakes up from his unconsciousness and follows the train tracks on foot to find Janina because she went with her father in the deportation trains.