I'm going to cut my brother and mom out of my life over money
Could you explain to me why you are fighting with family over money?
They are totally unreasonable. I deserve this money, it's my money not theirs.
It is usually not a good thing to cut family out of your life.  Money issues are the hardest on families though.
Seriously, you need to understand that.
No, you need to understand that money isn't worth losing family over and one day you will look back and miss them a lot and it will be too late. Never mix family with money again and learn from this mistake.