When people are faced with something unpleasant in life, to me, they have a choice. They can either use the unpleasant thing as a crutch for their own screw-ups or they can realize that it's unpleasant and work at being exactly the opposite.

Case and point. My father's mother was an alcoholic. My dad very easily could've gone down the same path and blamed it all on her, but instead he realized how it ruined his life and vowed never to be like that or do that to his own children.

Since it sounds like you recognize the problem, I have little doubt that you will be like my father and be just the opposite of how your parents are with your future grandchildren. Should you worry? All humans do. But I have faith that those who can see what needs improvement are the ones that will make it happen.