Same goes here, but I no longer get frustrated, that's sure a bad sign, LOL
i seem to have a better time with the iam technique when my consciousness seems blocked in meditation. i believe it is because the iam technique has something to do from beginning to end. In other words the mind is in activity practicing the various techniques. However just like the SRF techniques; there are pauses to go within and just experience. The iam technique is much shorter. i was told by Amma's staff that she has said there is no conflict between the iam technique and Paramahansa's meditation techniques (or any other spiritual practices) but do not combine them. Practice them separately and at different times. So as long as i practice the Kriyas' and some of the other SRF practices---i have found that a multiple approach works the best for me. When i have more time i find the Paramahansa's techniques better suited. Otherwise if i find myself having blocks in spiritual practice i find it is time to try a different approach for starters. Then of course there is the whole introspection thing that must go on again. Because really it is we who have put up the blocks. The awareness of how when and what we can do about it is not always so simple. If it was--the world would b full of enlightened beings. Spiritual practice is very subtle with many side steps and distractions along the way.