Should I switch my job?

I was born February 22, 1996 (Fire Rat). I am an accountant and I have a new job offer that starts this September. This new job will be harder and requires longer hours but will provide better career opportunities and growth in the future. I'm worried I will regret my decision as my current job has been great so far but I've also been lacking motivation/interest in it. Should I take on the new opportunity? Thank you in advance.