Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
BurnoutIndex - Check your burnout risk. Backed by science, forever-free.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Holly Health - Digital coach for healthy behaviour change
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
How Entrepreneurs Can Prevent Burnout - The handbook for busy founders on how to escape burnout