Kill most of your task lists

Faced with too many tasks, what happens is we start working on small easy tasks just to get the todo list shorter. That’s human. But it’s not very productive. –link

What I do each morning is to list down 3 tasks, I want to achieve each day. No more than 3 tasks because, if you do more of it you will end up with lots of tasks again. So what are you doing to keep your task list short and productivity at the same time?