With the way you put it, I'd say that pursuing your happiness is important. However, if you allow me to be honest, I'd be concerned you go back to your mother after some of the things that happened last I hear you were living there and trying to be yourself. Returning home can make us feel safe, but I am not sure it'd be good for your happiness in the long term.
I agree with Risk that if this job is not making it for you even if it is well paid you can start searching and applying for jobs as you go so you can find something closer to what you'd like without risking this one before time.
It might also be a good time to do some introspection. I recommend it to try to understand what is causing you to even consider this. What is on a deeper layer.
This is going to be me projecting on my own experiences so I will probably be off the mark. since I don't know the details. This might be a fight-or-flight reaction to something where you have a part of you wanting to run from a perceived danger and into your comfort zone, which is somewhere that might still not be ideal but you see it as better because you know what to expect and that gives you a sense of control that you don't have in this other environment.