First off, I want to say "Welcome"!!
Now I want to say, "Don't take your job home with you! "
I used to work in the oncology (still do per diem). I came close to burn out around year 2 of my nursing career. I sat down with a seasoned nurse who I respected and who never showed too much worry or any signs of burn out and asked, "How do you do it? How do you keep on going here???" (Mind you, lots of people died on this particular floor!

) She replied, "I give these patients the best 8 hours of my time and the moment I leave the hospital's doors, I forget about this job."
Simple advice that I took to heart.
Another thing I want to add. . .
Yes! It is important to be safe at work!
But we're only human! And despite ALL precautions, unintentional and innocent mistakes ARE made! Please take this to heart as well when you make your mistakes! It seems like you put forth great effort to be safe. That is to be respected! But I would sorely hate to see you crash if/when a mistake comes your way. Learn from the mistake and carry on!
And finally. . .
This time,
Listen to your husband! Take stock on ALL THE WONDERFUL CARE you provide your patients! The positive force you provide them is real and precious! Noting your strenghts and patting yourself on the back every now and then is JUST AS IMPORTANT as putting forth great effort in providing safe care.
Burn out comes easily in this profession! Taking care of yourself as noted above can help prevent such burn out!
Peace!
Ted