Thanks for saying this. I spent years worried if I took an hour or two or a day during 'busy' times, and it turned me into a liar, because I said I do things or be somewhere and often times I did not because of work. It is always a 'busy' time.
It took years, several jobs, and therapy before my eyes were open. Nobody cares, you are a human and have a life, if your employer does not understand that you need a new one.