Open the app.
Open the navigation menu (By swiping in from the left or tapping '').
Tap on 'My contacts' or a similarly worded option.
Tip: Once you've opened your contact list, you can then also export the contact list to your e-mails by tapping the download icon in the top right corner of your screen.
Unfortunately it is not possible to filter the 'My contacts' list within the application.