Should I stay or should i go?

I have the opportunity to start an amazing career in marketing but for the last ever I've been planning to move to LA to become a screenwriter. I went to college for screenwriting and it was my dream for a long time. Unfortunately my self esteem is pretty nonexistent now after constantly being put down by my mother, in laws and sometimes even my partner. He's so emotionally immature that when he gets mad he really hits below the belt. The negativity has been so bad that I stopped writing months ago. It's so hard to even focus long enough to create new ideas and when I do have one I feel like why bother since everyone wants me to feel like I'm incapable of reaching my goals.

Like I studied for 4 years and got my bachelor's but my sister in law is in the same field and finishing her Masters. Her bachelor's was in something different and my father in law is constantly telling me what I should do about it and how I should essentially kiss up to his daughter because she somehow knows more than me even though I've been in the industry longer. As if all my hard work means nothing compared to masters degree. They're nice enough ppl but I'm constantly getting talked down to like I'm an idiot and I think it's bc they're pretty wealthy and I come from addicts.

I have a child now so the marketing would be a great way to support my new family but is it the right thing to do? I mean I'm not even writing anymore so maybe it's for the best. Idk. I guess I could really use some advice or kind words.