Jasper S. answered 08/02/19
I teach for success in most any subject with background and experience
So, I'm curious if you've stopped and looked at what aspects of the science subject you were struggling to understand. Learning science is all about building on the prior foundations you build. Jumping into a high chem, bio, and physics course can be really difficult if you don't understand the basics from prior classes.
Most peoples' failure to understand science doesn't come from not having a mindset from it, but not realizing how important those early science days were. Go back and revisit some of it. Are you finding new information and discovering that you can understand it? Then, you can do it. Just rebuild.