I never talk about anything and the problem is that once I do I will blow up and let everything out…

I never talk about anything and the problem is that once I do I will blow up and let everything out that bugged me or got memad... I honestly wish I could express myself better but I can't. I've always let people a walk all over me because that what my life had been like and I don't notice it but enough of that. I will not treat everyone the way they treat me.