Rise of the New Torchbearer ꗞ

Hal Jordan became possessed by Parallax, and it appears he had then gone on to kill almost all the guardians and mostly likely the entirety of the Green Lantern Corps. Ganthet, the one remaining Guardian, has given you the last remaining active Green Lantern Ring in existence and has deemed you,"The Torchbearer!" You are the last and only Green Lantern in the entire galaxy, what do you do next?