My whole life ahead.
I'm sorry for the generic answer, but it's pretty personal for me what's intended in that short phrase.
I know every single thing that I'd love to do/have (bucket list), but I can't name them because that triggers strong anxiety and sadness for not being able to achieve them. I had so many plans, dreams, aspirations, goals...
Just wanted to express this since I'm having a really bad time accepting or assuming that I'm leaving all that behind. I'm actually being freaking forced to die by external circumstances in my life and psychological problems. So devastating