Sip your drink. If you gulp a drink for the effect, you are losing a pleasure of drinking, namely tasting and smelling the various flavors. This is particularly true for wine.
Skip a drink now and then. When at a party, have a nonalcoholic drink between the alcoholic one to keep your blood alcohol concentration down. Space your alcoholic drinks out to keep the desired blood alcohol concentration
Beware of unfamiliar drinks. Such drinks as zombies and other fruit and rum drinks can be deceiving, as the alcohol is not always detectable, and it is difficult to space them out.