I used to equate contentment with boredom. Over the passing years I have had so much change, challenge and excitement that being bored was highly unlikely.
Most of that was my testing the limits to discover what might be right for me. I didn't know if I liked something until I tried it, so I tried as much as possible!
Perhaps this is the appropriate next chapter - I have had those incredible experiences and now I am looking for a slower, sweeter pace and all the contentment that brings.