Have any fellow HN readers struggled with low energy levels for more than 5+ years and ever figured out how to counteract it? Curious to hear what worked for y

Have any fellow HN readers struggled with low energy levels for more than 5+ years and ever figured out how to counteract it? Curious to hear what worked for you. Definition of low energy levels in this context: * struggles to work more than 20 hours a week without spending the rest of each day and the weekend recuperating. * does not notice any significant differences in energy levels from a healthy diet, regular exercise, and achieving a healthy BMI. (That's not to say there isn't a difference, but it's small and can result in more consistent energy flow - the overall energy level is still low and recuperation is often strongly desired, feeling of fatigue is still constant)