I’m going to have a mental break down

My 10 month old never stops crying. He literally cries ALL THE TIME. My first two never acted this way. It’s like he just cries for no reason. I’ve tried everything. It’s driving me insane. He’s a very alert baby but the crying won’t stop. He doesn’t have colic. He eats and sleeps regularly. I don’t understand. I literally lock myself in my room while he screams.