with the frase "if everything was solid and absolute before you're born" i ment that in that case there is no free choice no free will, you can not change direction, subgoal etc on the path. the path is formed by walking it, so when we are not here in a body we sort of dream ourselves a path into this world again, but arrived here in a body we are immediatly experiencing all kind of things and we are processing new data. this new data maybe in our choices we make. so also to make choices on the walking of the path. off course in reality we can have both, but that is because there is no "absolute". so i better had formed my frase like this? imagine everything would be absolutely predesteny, then free will would be abstract.
so basically, like i have been doing, learn from your experiences, ases things & ask questions to better understand your self & others you effect around you, for e.g when i had a relationship go wrong & we moved on i would reflect on what i did wrong or what the other person had done wrong to me, & take these lessons learned to the next fresh relationship, therefore i think when we have learned from our mistakes we grow mentally spiritually emotionally. i think the saying is you never learn anything unless you make mistakes. but to still be concious of being on a path of being a good person & still be seeking knowledge & answers, hope this makes sense