Anyone else experiencing they don't recognize themselves anymore?

I used to be so sure about my life. I was super goal oriented, I had plans what to do in the future and I made steps to make it a reality. I am super successful at my life. I have a super strong will and grit to match with it. Nothing was going to stop me at life and I had no time for drama.

Then something happened to me, something depressing. In the blink of an eye, I don't care about my future plans anymore which I took so long to build and plan. I don't recognize my old self, where all the will power came from. I don't recognize why I was so strong and why I was so sure of everything. I feel like a stranger to old self. My old self seems like it died and can't revive. I don't recognize this new me.

This new me is so foreign, I don't even know what I want and who I am anymore. I don't know what to do so I can finally have the direction I need. Please help me.