The current thesis tested if an integrated self-affirmation and implementation intentions experimental condition would be more effective than a self-affirmation only, implementation intentions only, or control condition at reducing alcohol consumption in college students over a 2-week period. The study manipulations were specifically designed to be extensive, easy to complete, and personally relevant for all participants. Two hundred and ninety-three college students who reported drinking in the past month were randomly assigned to condition in a 2 (self-affirmation: values vs. control writing task) x 2 (implementation intentions: formed vs. not formed) between-subjects factorial design. Participants first completed a self-affirmation or control writing task, then read an article describing the risks of drinking. Next, all participants reported their common drinking behaviors and contexts, and then selected two harm-reduction strategies making either general intentions to use the strategies or making implementation intentions to use the strategies. Alcohol consumption was measured 1 and 2 weeks after the experimental session. Participants in the integrated self-affirmation and implementation intentions condition were most likely to abstain from drinking 1 week later. Affirmed participants continued to be more likely to abstain from drinking 2 weeks later. The findings support the efficacy of integrating self-affirmation and implementation intentions to reduce college student drinking. Implications for other research integrating self-affirmation and implementation intentions is discussed.