What helps you become a better person and a good person?

I question if everything is alright with me? My brother he purchased a expensive house with six bedrooms and he asked his girlfriend and her family to move in with him. She has two brothers and her parents and he invited me to there wedding. I stayed with them and her brothers getting married to their fiancees and moving out also and there's space in the house his wife insinuate hey now that he left there's a bedroom for you she also mentioned the college she went to that she would help me enroll there and I asked my brother if I could move in with him it's just me and he said no and I had found a job nearby I could work at and I could pay rent I couldn't understand how helped take in her two brothers from ages 18-24 and they lived there rent free and messed up the rooms and I thought my brother would help I was 20-23 year's old I kept hope for a few years that maybe he would invite me to live there. You see my parents moved us to another state I was seventeen and I always wanted to move back to my hometown and he lives there I graduated from highschool and wanted this opportunity to start new and live with him and he said no so sometimes I feel that rejection and think what is wrong with me that he would not tolerate living with me?

I think to myself that if I had a house of my own I would help my brothers and take them in I Question why he chose not to help?

I have to ask myself how do I become a better person who does good I don't want it to be this way how can I do better