So sorry that you feel so bad about the fridge. It's horrible when things get to you like that, I know the feeling, there is a serious want to turn back the clock and change the situation.
Try not to be hard on yourself. It's ok although it feels like it is not ok.
I also know what you mean about making mistakes. Try and slow down, I mean, really slow things down and then your subconscious will just act for you, instead it sounds like you are putting things to the front of your mind and rushing.
I have made a lot of mistakes lately and been rushing, so I know what it is like.
Don't worry we all make mistakes, it might not be your fault even.
I'm sure your good at your job, your just feeling low maybe.
Please see your dr if you feel your depressed or anxious.
Take care Hun.