Yes. Do not assume you have ceased growing and changing. I have seen a number of people change careers over the years. It was much easier for those of us who had good grades in college.Giving 2 examples:
I was a mid-life career change person. I had earned a political science degree by the age of 22, and worked in a state social work agency. In my early 30s, I decided to go back to college at night to study accounting. The fact I did well in college before meant a smooth acceptance into a different college's accounting program.
In a more extreme case, one of my state coworker's mothers became seriously ill. My coworker had to care for her mother over the last 6 months of her life. After her mother passed, my coworker decided she wanted to go to medical school. While she had not majored in science as an undergraduate, she did make very high grades. She went back to college full-time to take science courses, and was later accepted to medical school. That would not have happened had she been content with Cs during her initial college years.