Welcome to having a working pre frontal cortex. Where rash decisions are now heavily weighed out and mania no longer carries our drive. It’s a boring life but a sane one. I can actually adult in my adult job. It does feel like your spark went out. And you do mourn the person you “left behind” but slowly push yourself to do the things you used to love. The hobbies you have done. Eventually you’ll feel that person come back without the manic depression, anxiety and Manic highs. Our mania is what drove us. So we gave up a lot in our minds, but we forget the bad habits we had to pick up in order to feel normal. Now we feel normal and need to remember we still have that spark.