My suggestion is this based on having started a milestones list in the early 1980s. I use it as a memory aid. When I got my first computer I transferred the list to a spread sheet.
As to your question Why now after 20 years? I had found that many significant events for me have happened in 18 year cycles and in February. My suggestion is create a spreadsheet of memorable events in your life thus far and then look for patterns.
I work as a shaman - born with the ability to see into other planes of existence. I used to have a rigid mind that constantly ruled out many unexplained experiences. Slowly over time I began to integrate my analytical facilities with empathic proclivities and intuitive abilities into wondrous worlds. As a medium I have assisted others in making contact with relatives and loved one who had passed.
My mother recently came and did some healing work on me (she passed in 2015).