I hadn't thought about this stage of my meditation practice for some time until I read this excellent article. As I reflected on my life before meditation (20 years ago), I remembered my need for drama, for big wins, for brilliant breakthroughs in order to feel alive.
And then I remembered that at some point in my meditation practice I too experienced this passage, this time when I felt that being a meditator had made me boring. I was comparing my mind to the minds of my friends and colleagues who valued the drama in their lives. As I let go of these comparisons, I felt a sense of freedom and was able to experience the joy that mindfulness brings.
I think you will find this Psychology Today article quite insightful.