Career regret.

Almost 10 years ago I got hired by my local PD and after a very short time I quit. I was still in the in-house training that they make you do before they send you to the academy. Nothing happened. I just got in my head over all of it and decided to go back to my old job. Now I’ve been having terrible regret over it and even wanting to try again. But now I have a wife and kids and I’d be leaving an easy job and great benefits. I don’t like my job, it’s boring and I just feel like I have no purpose in a career sense and I don’t know what to do.