how do I not yell at 1 year old when I feel overwhelmed because he want let me change him or he…

how do I not yell at 1 year old when I feel overwhelmed because he want let me change him or he climbs on something or pours my drink out is it bad I yell no and get all upset please tell me this doesn't make me a bad mom I'm trying to stay calm but sometimes lose my cool when he want let me do what needs done especially diaper changing