“Emotional self-regulation” is a risky proposition. Much motivation to pursue grand projects comes from “petty” emotions e.g. anger, shame, proving others wrong, grandiose self-belief etc. Get rid of those & you may be more stable, but lose the motivation to do anything great.
Grand to me means potentially several years striving towards something. And risk means wrong moves that could destroy your living standards permanently, etc. I actually don't know people that can emotionally regulate over a decade that leads to ruin, etc. Kids think they can.