i am ready for things to move forward in my life. i feel like things are stagnant.i need change

it's heartbreaking when you can feel yourself getting pushed out of someone's life.

I feel so trapped in my marriage. We have been together since high school and I just feel like he will never grow up. I'm mentally exhausted. But terrified to end my marriage because I have been a stay at home mom for 10 years and have no idea how I would support us.