Anyone can do this, and it takes literally only a minute at most. It could be done in as little as 10 seconds. All you do is imagine yourself taking a shot of liquor and act it out (I usually do this in the bathroom or any other room w/ no people in it). I know a lot of people on here are against using alcohol as a crutch for your game, but since there's no actual drinking going on I think it's okay.

In my head, I imagine myself as the focus of a group of people where they're all encouraging me to take shots (for example, when I arrive to find my friends pregaming & I need to take a couple to get caught up). The key to this is actually acting it out. Visualize the shot glass on the table, full of your favorite hard beverage (I usually go w/ tequila but this is just a matter of personal preference), grab it and shoot it back. Slam the shot glass down on the table, give a celebratory "WOO" and throw your arms up to into a success pose. Everyone is cheering you on. High fives go around. Nothing's happening to your physical body, but you still get a rush similar to when actually drinking. To increase the boost, take a couple imaginary shots. Now you're ready to go out there and kill it.