I felt the same way back when my career started in the late 90's, with what felt like daily new kernel updates for security issues and tons of realizations that

I felt the same way back when my career started in the late 90's, with what felt like daily new kernel updates for security issues and tons of realizations that the "old way" of doing things was insecure. You'll make it. There will be bad times and there will be very long nights and weekends, and you'll probably have a few events in your life that will make you say "ok, I'm done" but you'll survive and make it through. Try to be mindful of your mental and physical health as dealing with these issues can take a toll on you, but do know that you will survive and make it through.