I learned astral projection before I really did any serious intuitive work. Learning AP taught me that there's definitely more to life than the physical universe, so I realized that if AP were real, then I could probably access a lot of other creative/intuitive parts of my mind that had links to the non-physical.
From there I got into doing intuitive work as well as channeling, i.e. trying to "download" messages from non-physical beings. I actually got pretty good at channeling and have many pages of channeled material. Some of it was pretty mind-blowing for me because I could tell the ideas weren't coming from me.
For example, the articles I've written on polarity are based on channeling sessions I did around 2002, long before I started working in the PD field. It took me years to really make sense of those concepts and to decide how I wanted to polarize (I kept going back and forth), but I eventually saw that it made sense. According to some of the beings I spoke with, earth is the place where we decide how we want to polarize because our own energy is constantly reflected back to us here. Earthly life is actually designed to push us out of energetic neutrality, meaning that it pushes us to eventually polarize. That's one reason we have things like war and disease here -- they provoke strong reactions in us.
Outside the earth plane, there are much more extreme levels of polarity. It appears we can eventually progress towards becoming something like a demon (darkworker path) or angel (lightworker path). But the interesting thing is that neither path is considered right or wrong. The demons and angels even seem to have a certain respect for each other, even though they choose different paths.
Being able to "download" ideas from the other side has some incredible practical applications. For example, an understanding of polarity has helped me tremendously in business. Whenever I have a tough decision, the right answer usually becomes clear when I ask myself, "What would a lightworker do?" This helps me see past any financial concerns to the big picture behind it: how can this business serve the goal of raising consciousness? I'm human so my implementation is far from perfect, but it works pretty smoothly. Whenever I consider a change to my business, I run it through the polarity lens to see if it fits with the lightworker path.