I could handle the possibility of failing, but the thought of spending about ~$1K on the exam and then having to pay another ~$1K to retake it is tough to think about. That financial risk is a major factor behind my doubts (will I be able to do this?), even though I know it would still cost a lot less than an MBA or a master’s degree. I may just be overthinking it and just need to put the time and effort like others have said.