How to Overcome the Impact of Toxic Relationships in Life

So I have a childhood friend she grew up in a very uneasy family environment because her parents had a very strained relationship due to which she grew up amongst constant fights with lack of love So Across the years I've seen her grow up as a person who's become very reserved She does not believe in love she doesn't believe in the power of relationships So how can we sort of not let such toxic relationships impact us so negatively in life See everybody is finding a certain excuse for their own miseries So my parents were like this so I am like this Well this is unfixable because we can't change your parents now all right Hello Can we change them now So you need to understand this especially if you've gone through tough situations in life or horrible situations in life let's say Is it not important that you become wiser sooner than other people