How likely is it to adjust to Portland's gloomy weather?

Question from someone from a sunny place. I've lived in Atlanta, GA my entire life, and I have decided to move to Portland for college. I love the school I'll be attending, but to be honest, I am pretty nervous about how the weather over there will affect me. Even in Atlanta, when it's overly cloudy/rainy for a few days, I notice a difference in mood. I just feel heavier. It's hard sometimes to pick myself up. But a lot of people assure me that the weather will be just another thing to adjust to in college. Any input?