Unfortunately this is not the case for the majority or typical student. Across the globe, psychology is a fairly difficult course. Many believe it to be "common sense" but I assure you it is not.
The first important consideration you should make is "Do You Have Time for this Course?" Many students do not realize the required study time for average difficulty courses is 2-3 hours per credit hour. That is 6-9 hours of studying outside of class per week for my course alone. And this is just for a grade of "C!" Please keep this in mind. Ask college students who get A's in the majority of their courses, just how much outside class time they put into their studying. I'm sure you will find it is quite a bit more!
Then there are many other elements which play into being successful in any college course. I am including a variety of weblinks for you to look at to see what is important & what you can do to improve in those areas. A more thorough web search can provide even more help. Please read the HIGHLY Recommended Section at the beginning of the course and use the Additional Section as needed! I also have a psychology section which I will keep adding to. Many of these links are provided by your fellow classmates! If you find any great links send them along to me & I may add them too! Hope they help!