Many people love their to-do lists. Take my wife: She has several going at any given time. Task lists keep her focused, on track and for want of a better word, reassured: Writing tasks down eliminates any nagging "I hope I remember to do (that)" concerns.
Other people have a love-hate relationship with their to-do lists. Start the day with 10 things on your list, "only" check off nine, and regardless of how much you did accomplish, you feel you failed. Their to-do list helps keep them on track, but it may not make them feel good about what they've achieved. Either way, to-do lists work. But one simple addition can make them work even better.
A study published in Journal of Personality and Social Psychology found that students who spent a moment writing down why a particular topic had relevance to their life, or to the life of a family member or friend, were much more successful than those who did not. In short, they added a "why" to their task list.
Please select this link to read the complete article from Inc.