Personally, I find research on the stability and heritability of traits both comforting and motivating. When plagued by self-doubts that I am no longer smart or hard-working, I derive comfort from trait stability. But I also use my parents' flaws as clues to my own shortcomings.
On the other hand, the stability also indicates that your attempts at self-improvement are largely futile. Adopting a live and let be-attitude seems wise reply to BG pessimistic findings.
