ah the environmental and the genetic (hereditary) theories are still fresh.
as for my former alcoholism and bipolar tho, "the genes (ayes) have it".
just my humble opinion but i feel my basic personality is based on the conditional learned behaviors that occured during my formative years. after that everything got tacked onto that info causing my viewpoints and personality traits. some of which i've needed to change to cope with life in a more healthy way. the previous /early childhood info became painful to say the least.