Gregor's metamorphosis's has changed Grete from being a little sister that had no responsibility. To a sales women, that has become selfish only thinking about herself. Grete has no time for Gregor anymore. Before Gregor tranformed into a huge bug he was the provider for the family. No one took her serious before Gregor turned in to a roach. Grete was only seventeen years old living off of her brother. Grete and the rest of the family feel's Gregor is a burden and causing them stress, only because he is not providing for them.
I would say that Gregor viewed himself as a man trapped into a job that he hates,but he's happy that he can take care of his family. Gregor loves his family and would go as far as paying off his fathers debt after his business collapsed. Grete on the other hand is adoring and committed to Gregor before he transformed into a bug. Grete's motive were a mixture of devotion by his parents and being a child not really understanding his bug- ness. She was the one who voiced that Gregor was never going to be human.
Father viewed himself as a hard working man that made mistakes. But Gregor would quietly say that he is a slouching, defeated man who let his failured business weaken his vatality. his father fould himself after he seen that there economics situation needed some help so he started to work again. Gregor's mother was weak physicallyand mentally. She suffered mostly from the fact that her son was a bug. Despite her love for gregor, her health was terrible when ever she saw him with her own eyes. Because father and Grete was so sensative for mother they started to resent him because Gregor was the one who was making her weak on top of being weak.
When Gregor was a human he already felt isolated form the world. Grete was a teenager that was living luxury and didn't have to worry about anything. Father didnt care abount nothing really as long as his debt was being paid off he was ok. Mother was a mother that was weak for everything and a women who lovedher family no matter what.
These metamorphoses contributed to the over all meaning of the work. Franz Kafka rebelled against his father's meteralism. So he wrote metaphorical stories to over come his break down. It also explains how Kafka focuses maimly on the transformation of gregor the main character. That is about to change throughout the story within each character. As well as the change in the relationship between the sister grete and Gregor. These Metamorphoses contributed to the over all work to see how people change so Drastically, like in the beginging of the book Gregor was a loving brother and son who took the responsibility of his family. To him being called a burden and stressful because he was a bug. No matter what happened to Gregor If he would of stayed alive or dead they would of eventally started to treat him bad.