Read what the Prophet (SAWA) and his Progeny (AS) said about treating your family (Best of you are those who are the best in treating their families).
You need also to read about the bad results of being toxic to your family e.g. miserable situation in the grave, etc.
'We need to be humble inside our hearts and believe that our family members are humans like us and part of us. We deal Wi them as we want them to deal with us. We will enjoy life here and hereafter if we treat others nicely especially our family.
Try to look at the mirror if you become angry, you should calm down because you will see how ugly to be angry.
Keep on seeking forgiveness for the past and seeking help of Allah to make you a nice person with your family.