The quickest way would be to mix it with other drugs. Ethanol is contraindicated with a lot of drugs and you can significantly increase the effects to the point where drinking 25% of your intake would achieve the effects.
I wouldn't condone this, and wouldn't encourage anybody else to try it, nor am I going to suggest what drugs would work. Drugs are contraindicated for a reason. If you really want to know more, research it on the internet.
But the best thing is to cut down your drinking...
Ever thought about having a drink to enjoy it, other than with the sole intention of getting ****faced?