This so far has been the most difficult exercise in the book. The first day I did great and it went downhill from there. The first day I was mostly at home, so I didn't have to interact with many people. As a speaker of both English and Chinese (poor as it is) I have found it even more difficult because I count it when I use either language to communicate the 'meaning' of the words I, My, Me, Mine, Myself. So far I have never said myself or mine.