While I can't speak from recent experience because I graduated as a chemical engineer in 1980, I think chemical engineering is a highly competitive field, especially in college. The drop out rate for ChE students probably ranges 40-50 percent in the first 1-2 years. If you make it past the first two years, you are probably going to be able to complete your degree without much additional risk of failing. Once you are in the workforce, you will still be competing with your peers for promotions, but that is true for any profession and my experience was that the degree of competitiveness was not nearly as intense as in college. All that said, I think you would find chemical engineering to be a very rewarding field with lots of career opportunities if you decide to pursue that choice. Good luck with whatever you decide.