1. By seeing how many tasks you have achieved out of your to-do list. 2. If task takes more than a day (of planned time) you have not subdivided it finely eno

1. By seeing how many tasks you have achieved out of your to-do list. 2. If task takes more than a day (of planned time) you have not subdivided it finely enough. 3. For every 5 hours it takes a task (add extra 2 hours). 4. For every 6 days it takes a task add an extra day 5. Roundup 3-3.5 weeks of work to a month