What do you do with your free time and mental space once you find safe relationships?

For those of you who have found safe partner and friends, what do you do?

I spent so much time in the past ruminating, managing, strategizing to survive dysfunctional relationships. I would say it consumed most of my time. I imagine being with safe people means you resolve conflicts rather quickly and healthily. There will be no more prolonged struggles. What do you do with the void, the free time, and mental space?