You must have or develop patience so that, to paraphrase Chen Wei,ming, (one of Yang Chen,fu's senior disciples and a famous instructor in his own right), if in ten years you don't succeed, you use twenty! Frustration comes from within; it is not something imposed by the difficulty of learning any art or discipline. While the stimuli for frustration comes from poor performance, how you relate to that poor performance is uniquely a function of your personality. Like anything else, frustration with your progress can be a two-edged sword. If not frustrated to a certain point, the student is likely to be complacent in his or her training. If overly frustrated, the student is likely to give up prematurely. This happens when the student feels, rightly or wrongly, that there is some, thing wrong with him if he-cannot learn at all or even simply quickly enough for his own taste. Frustration comes because you expect too much too soon and because, paradoxically, you work too hard (especially mentally) when training. If you can learn to pace yourself in your efforts, progress will come eventually. And it is not just a matter of nodding your head in agreement and saying, "Yes, that's right." You have to believe it on a gut level.