While seated at the bar in The Red Circle, a high class nightclub, to drink the paranoid and anxious feeling that John Wick, a former coworker of yours, would come after you and kill you like all the other members of the Tarasov Mob..
Even after all these years, you knew he was still out there. You didn't know where he was or what he was doing, but you knew there was a high risk for your death.
The only thing that could help you right now was alcohol and the noise of others around you.
Alcohol would numb the feeling, and others might've made you feel safe even if you knew John could be lurking in the crowd.
You knew why he was out to get you. You knew why he killed the others. The boss's son killed his dog, Daisy, who was the last gift from his now deceased wife.
You knew how dangerous he could be, which was why you were so anxious and paranoid. I mean, he killed all of your rival gang's men in a single night just to retire from the Tarasov Mob.
It wasn't crazy to be shitting your pants at the thought of him hunting you down like a dog. Any rational person would've already fled the country for their life by now..