My Qualified Leads are all Leads that are assigned to you! These can be found in the Sales and Contacts tab.
Note: A Qualified Lead is a contact with a score greater than 0. Leads are just contacts that are part of a Lead's list.
Salespeople:
To access your qualified leads as a salesperson select the "My Work" tab then select "My Qualified Leads".
All Qualified Leads:
To access all qualified leads generated in your account select the Marketing icon from the nav bar then select "Qualified Leads".