I quit my job after 7 years...
Why did you finally decide to quit?
Because I needed money and my job wasn't satisfying for me anymore.
It's okay to quit your job when your current job is negatively affecting your health and your life outside of work. If you have a better paying job lined up and are able to do it, then you should quit your current job.
I needed a better paying job to support my family.
I get that you need the better job. It seems like moving on is going to make you happy so that is good. It is good to steer your life in a direction that is going to make you happy.