The song is about dealing with heartache and attempting to move on from a lost love by turning to whiskey to avoid reality.
The lyrics show that the protagonist doesn't want to see the truth and tries to distract himself, as he can't bear the pain and needs alcohol to cope with it.
The chorus emphasizes that he can't bear the pain and escapes into a world through 'Whiskey Glasses' to alleviate the pain and have a better view of the situation, where he doesn't have to think about her.
Despite the pain and loneliness, he tries to stay strong and look forward, even though her absence affects his life.
The song conveys the message that sometimes the only way to deal with a broken heart is to temporarily escape and get lost in illusions by seeing the world through 'Whiskey Glasses'.