I used to hit and slap my brother when he was 3 years old ,I severely bullied him for 4 years ,and he used to cry help Lessly, I used to slap him very hard ,whe he was bullied by some seniors I scolded him for doing nothing ,seniors were twisting his hand severely ,but I used to scold him for small things when he used to get home ,he used to cry a lot, after now I am 17 and my brother is 10 ,I am extremely guilty of my behaviour ,I exploited my brother a lot ,and I keep recalling the moments when he used to cry helplessly for me ,I dont know what to do now