a couple simple solutions that may help cure your hangover after a big night out:

have another drink.
many people report drinking another beer first thing in the morning cures a hangover. i’ve not personally attempted, but seems worth of trying.

hydrate properly.
most hangovers are attributed to dehydration of the body. drinking water and other sport drinks should help re-align your hydration levels.

pain killers.
aspirin or any other available pain killer can help reduce the pain.

keep it quiet.
avoid bright lights + loud sounds. these obviously irritate an already pounding head.

next time:
drinking enough water to prevent the dehydration before you goto bed is the best method of prevention. i personally try my best to take at least half a glass of water for each drink consumed.