I'm going to go the extra mile to get a work project in on time.
What's making you work so hard?
I'll feel defeated if I don't.
Being able to buckle down and work hard when you need to is a good thing, but don't let your work consume your whole life. If you focus so much on work, you will miss out on the important things in life. Try to find some time for yourself to relax and enjoy a hobby or spend time with friends.
Tough guys don't need hobbies.
Its not about toughness, it is about balance. You should be able to have both and not one over the other. This is a healthy thing to do for most.