Becoming a mother

A little backstory about why I am asking this: My mother has a drug problem. She was in a very abusive relationship for many years during my middle school-high school years. My sisters and I ended up living with my grandparents and never went back to living with my mom. My mom even after several years still hasn’t gotten her life together yet. I am nothing like her. I am a nurse, married to a sweet, thoughtful man, excited about being a mom.

For those of you who don’t have a good relationship with your mom, how did you feel when you had your baby?? Currently pregnant with my first and so worried about the kind of mother I am going to be. Do you feel like you struggled a lot with learning to be a good mom due to a lack of having one yourself? Am I overthinking?