I'd like to say things like: being able to have a job (ideally a meaningful one), having financial independence, having people whom I can trust, and so on. There are potentially lots of things that could be changed to make my life worth living, I suppose.
Ultimately, however, the real answer is that I would have to not be me. The only thing to make my life worth living would be that it not be my life. A magical genie could grant all my superficial wishes, but if I am still myself at my core, my life can't really be worth living. Self-sabotage is seemingly one thing I'm exceedingly good at. So if I were thrown into a perfect life situation, I'd manage to ruin it by virtue of being myself. The only thing that could make my life worth living is fundamentally changing my very essence, at which point, it's not my life that's been made worth living, it's the life of a better person who deserves to live in the first place.