It can be very hard to hold on to.

[and force knows he tried. the rebellion was always hope to him, despite how much he tore himself up for it. as long as it existed, there had to be a chance. jyn just reminded him of that for himself too.]

There is no reason you cannot learn now. Keeping hope alive would not as meaningful if it was impossible. I look to the Quarantine as a second chance. Maybe you can find more hope here.