My Todo List helps you plan the activities that you need to perform for different leads from a single place.
It collectively displays all the different todo items from different leads assigned to the same user.

For ex if user A is assigned to 5 different leads and each lead has 5 todo's then My Todo List for user A will show 25 todo's.
You can edit, delete and mark a todo as done directly from My Todo List.

The same action would be replicated on that particular todo item in its respective lead.

To access my todo list click on the option My Todos under the Todos dropdown