I have done Qi Gong every day for about a week now and still can't tell any physical or mental difference. I may not even be doing it right. I don't have good concentration (one of the things I want Qi Gong to help me with) and I can't visualize well. Also, my feet hurt and go numb from standing in place so long. Can anyone tell me if I'm just wasting my time or will I feel something soon?