Maybe there's just a breeze you aren't aware of shutting the doors and they aren't really shut for good? Get your imagination out to imagine the next doors you might want open and they will appear. What do you want to move toward? I remember when I decided I could not do what I had been doing for 20+ years and felt lost but that was just my own focus; I looked around for "what's next" and it appeared. Don't focus on the closing doors, look for what you might want to do next.