Why Did My Blessing Slip Away?

Assalamu alaikum. Lately, I’ve been drowning in anxiety for a few months. I poured my heart out in du'a, weeping and begging Allah for a miracle-it honestly felt like only a miracle could save me. Then, during the blessed days of Dhul Hijjah, I made a heartfelt du'a, and that very night, something amazing came my way. It was everything I’d ever hoped for. I was so grateful and peaceful, knowing my du'a was accepted. But just two weeks later, I got news that shattered me. Now I keep asking myself, what did I do wrong? Why did He take it away? And how can I get it back? I’m back to crying in my sujood, but the stress is overwhelming again. I can’t help wondering why He gave it to me only to take it away. I’m trying hard to hold onto tawakkul, but it’s tough when I feel like I’m back to where I started. All that du'a, all those tears, they seem wasted. So, when does Allah take a blessing back? And when-and how-might He return it?