How to recover after feeling like I made the wrong career choice?

I was working in customer service at Etrade as a licensed trader for almost 4 years. It was an ok job, just was constantly working every moment I was punched in, very little down time. Last year when they made me return to office, I got licensed as a financial advisor and am now working at Merrill Lynch as a financial advisor. I feel totally overwhelmed. I’m working 11 hour days most of the time, and I don’t think I have the capacity for the sales portion of this role. Not sure if I should bring this up with my manager and see what would be a better fit for me, or if that would just result in my termination. Should I look for a new job? If so what? Or should I just try and stick it out?