If you want to use your time more effectively, wait and complete the task you’re working on before moving on to the next item on your list.
While it may feel like you are tackling more things on your to-do list by multi-tasking, many studies show that multitasking makes you less productive. In a similar vein, the mental energy required to switch between tasks creates a lag that could be avoided by focusing on one project at a time. If you want to use your time more effectively, wait and complete the task you’re working on before moving on to the next item on your list.