It’s is a big question and a difficult one, indeed. But it’s important to face it or at least think about it at the very beginning of this process because again and again, you need to remind yourself not to fall back into the trap. What you are really asking here is - what are those set of thoughts or emotions that makes me hallucinate? Here, hallucination means remaining in that mental zone where you are either stuck in your past or your future. For instance - whenever you think about your marriage, you can’t help but think about your past relationships. How you were treated, by whom and how you have been shaped to become who you are today. To make your marriage work you need to ‘live your present as joyfully as you can with your current life partner’. But you keep thinking about your past relationships and that makes you ignorant.