Twitter and Block cofounder Jack Dorsey balanced running both companies with a rigorous routine. Dorsey's routine included meditating, doing 7-minute workouts, and making to-do (and not-to-do) lists.

Jack Dorsey, co-founder of Twitter and CEO of Block, is reshaping his fintech empire with sweeping layoffs, a sharper focus on AI-driven efficiency, and a long-term bet on Bitcoin as he navigates shif ...