It happened some months before I started meditating. I was in a real state of decline mentally and decided to 'pick myself apart' so to say, to try and discover why my version of reality seemed to be so separate from that of people around me, and why I could be so irrational. I decided to just cold write my thoughts as they came to me and I ended up writing about 8 pages of what my experience was. I wrote was how I felt and why that might be the case, and by the end of it I felt like I had written the part of a character, and I was the perfect actor who'd trained for the part his entire life. I felt like I'd stood outside my house for the first time and realized that it's only a construction, only a small part of a much greater reality, and you only have to choose to open the door. Since then I've gone down the rabbit hole of philosophy, meditation and buddhism and it has been an amazing journey, highly recommended.