My own family annoys me so much

I love my sons. I love my husband. But OMG my family annoys me so much. I got a 9yr old boy that loves to purposely annoy me such as making annoying noises and repeating phrases and asking questions or making statements that he already knows. Ex: Like is that a dog? Pretending to be dumb. My 1 yr is being a normal toddler but drives me nuts. Crying over stuff he isnt allowed to climb on or getting into stuff he Shouldn't. My husband just turned into a different person since we had our 1yr old (his first child, 9yr is from my first marriage. ) he started 3 new hobbies since I was pregnant, making model trains, purchased a salt water super expensive aquarium and decided to start hunting another expensive hobby, bought a rifle and all the hunting stuff. So we are in thin ice in our marriage. I am trying so hard but just get so irritated I just feel like running away. I am seeing a therapist and psychiatrist to just stay afloat on the daily basis. I really hate my life right now. I want to be happy for my children. Trying so hard but just cant seem to. Some days I feel like checking into a mental hospital.