Consider that maybe the reason you can't shift or manifest what you want is because you still see a separation and difference between imagination/perception (mind), dream and reality and don't trust that you are the only Creator (not ego but God/Awareness) and Source of your world. You might have learned the concepts and maybe even accepted it intellectually but you don't directly see these mechanisms as absolute therefore you doubt, waver and get anxious when things don't appear. Really really let that sink in.. Because if you did, you would no longer need to try to get or make it happen anymore, you would just BE it. Really think about it and try to understand.. you're trying to squeeze out some manifestations while your foundational understanding* of who you are and how the mind/dream/reality operates is flawed. It's like trying to drive a car with the brakes on. Focus on correcting the foundation, and then things become much easier.
*understanding is not the same as accepting an intellectual concept.. it starts with the realization that it is true. Direct experience is best. Next would be meditating on these things and just sitting in silence and stillness. And most of all just remaining rooted in this knowing
