For premeds who earned a very high science GPA, what did you do?

I have a below average science GPA, 3.5-3.6. I have a few other prereqs to take and need to do significantly better than how I have performed in the past. For people who have done really well in science classes, what did you do? Especially if you're the "strong in humanities" type but absolutely pathetic at STEM.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pre-Medical (MD) Source Type: forums