How to manage the learning pressure?

Question

I am 13yrs exp software engineer. In my career I working hard to deliver projects and also to learn something. I am father of two boys and having tight deadlines in current project, because of that my learning is getting affected; I am not able learn and the pressure is getting increased exponentialy, I am also having health issues to focus and thus adds extra pressure. If I wasted an hour then I start feeling guilty and the entire day is getting ruined. Kindly help me to come out of this pressure cycle. How you guys are learning and managing the pressure?