I'm afraid of becoming too much like either of them - I think that they are such opposites, but both have traits that can come across as frankly callous and unhelpful, in different ways. My father was very strict and would never let you live anything down or feel like anything was more than just good enough, at best. Neither of them were very receptive to the real struggles I had growing up with mental health issues, because neither of them thought a child or teen could have 'real problems' and neither really knew how to approach that sort of thing, so I never felt I could go to them, and we still aren't really close now I'm an adult as a result. I am terrified of being that kind of parent.
I like to focus on the fact that I think I still got some of my best traits from each of them, though - while I wouldn't want to be too similar to them in how they approached parenting if I one day have kids, their hearts were in the right place, and I'm proud of the most central qualities I got from them.
They both stand by not worrying too much (essentially, both have an attitude of 'do what you can about something and beyond that, there's no point continually worrying about it', which I think is ultimately the healthiest approach to have).
They both work hard and really taught us that if you want something, you need to put the work in, because you don't get much for free in life.
My mother can be a very sentimental, emotional person, and it's from her that I get my immense compassion for animals especially. I'm not afraid to express or feel emotions and consider it a sign of strength and sometimes even goodness rather than one of weakness, which is saying something since admittedly my father made emotions the butt of jokes and essentially something to be shut off in our family, lest you be told you were 'overreacting' or being stupid.
My father can come across as blunt or emotionless, but he is simply a very matter of fact person, and can be a bit black and white sometimes. I don't want to be like that as a parent, and I don't think things are nearly as simple as he can sometimes see them. What I do take from him, though, is a strong conviction with what I believe is right and a willingness to express and develop those views - from a young age he debated with me and challenged my views on everything from war to religion and encouraged me to do the same with his, treating me as an equal in that area, not as a child - he could never stomach anybody talking down to me intellectually, even while I was literally a toddler. Because of that I've never struggled with or been afraid of articulating what I believe in and why I believe it, and debating that with other people in a way that makes us understand and develop our perspectives more. I am absolutely not afraid to disagree with someone if I feel they are being unfair or not considering all the facts or how others might feel about something, and I will not be intimidated out of it. That's not to say I'm not also good at picking my battles or times and places - just that I will not back down if I feel there's more to be accounted for just because someone else thinks they're right.
Like a lot of people my experiences with my parents are a mixed bag, but my father in particular has mellowed considerably and expressed regret at how strict he was now we are adults and he and my mother have been separated for a good while. I think the most important thing is to be aware of what you don't want to take from them - it's not always conscious or easy to change by any stretch, but being self-aware and willing to seek help to make changes is the first and most important step imo. I'm thankful that I was able to do this, and I feel like with those things, you can cultivate what you like from your childhood/parentage, if anything, and not have to give into the rest.