Well, just off the top of my head a few things come to mind about seeing the Watchtower for what it really is...
1. Your own 'ox' gets gored, and you take a second look at how they are treating you.
2. You have an 'epiphany' and your eyes become opened
3. Holy Spirit teaches you something
4. You start to research some Bible topics
5. You become sick and have to miss a lot of meetings and then start to think on your own a little clearer
All of the above happened to me over a period of time.
Outaservice