ca is tuff or upsc group 1 exam is tuff
If you are a serious candidate and work hard toward your goal than you can achive any goal. There is no tough things in any exam we make things complicated.
upsc group 1 exam is one of the toughest exams in india but if the people who are clearing the exam can clear the exam than why not you.
CA is also tough but no doubt the salary of CA is more than an ias .
ALL THE BEST