they all get me eventually.

[kjc0123]

What is the meaning of "they all get me eventually" in the following sentences?

 

"It's weird," Forrest said. "When I'm clean, I sleep like a baby. Eight, nine hours a night, a hard sleep. But when I'm not clean, I'm lucky to get five hours. And it's not a deep sleep either." 
"Just curious�when you're clean, do you think about the next round of drinking?"
"Always. It builds up, like sex. You can do without it for a while, but the pressure's building and sooner or later you gotta have some relief. Booze, sex, drugs, they all get me eventually." 

[Ouisch]

Eventually, no matter how hard he tries to stay away from alcohol, or drugs, or sex, he eventually breaks down and falls back into his old habits.