I don't think there is such a thing as 'wasting time' in therapy, other than those that come and refuse to do any work what so ever. Struggling, dissociation, silence, internal battles and wars that have yet to surface, none of that is a waste. It's just a part of the process, neither good nor bad. So my answer would be - reframing how I view my sessions. I would not view them as being a waste of either of one's time, but another step in the therapeutic process, doing my work as I should be doing it.