"My Tasks" can be found by clicking "Projects & Tasks" in the top navigation bar.
"My Tasks" is a private workspace that contains 1) all tasks assigned to you from all other workspaces and 2) all tasks you created within the workspace (which are private).
Note, any task that you create in the 'Calendar' view will be private and will be assigned to the "My Tasks" workspace by default unless you change it.
Other workspaces that you create or are shared with you are public. Other teammates on Motion can read and edit projects and tasks created in public workspaces. For example, Client A, Client B, Client C, and Internal Admin are all public workspaces in the image below. Learn more about creating workspaces.