Alcohol induces or exasperates chronic depression and anxiety, and the after-effects may linger for a few months, but usually by 90 days you are back to normal. Crying won't hurt you, but continuing to drink will. Many people have quit, some who were horribly addicted, and after decades of drinking.
I too, thought that I could not stop, but I was wrong. No, it was not easy, but it didn't kill me, either. You can quit if you are determined, although you may need to speak to a doctor about a controlled taper if you suffer physical withdrawal.