Marriage insecurity

I don’t know who to ask about this but I am hoping I can gain some advice.

I am struggling. I feel like my marriage is struggling. My husband appears to me that he thinks things are fine, but I feel so conflicted.

Are there any books or articles that you may recommend for me to understand that it’s okay to have struggles in a marriage?? I love him so much and I want to grow with him in a life together. But when I get upset, I’m worried that I should just do us both a favor and just leave.

I feel like I’m not normal and that this is all my fault. I don’t know where to turn. If you have any advice for me, please let me know.