Stressed out

I'm working too hard, and it's starting to take a toll. I'm not feeling as young as I once did, and I feel the stress having an adverse effect on my well-being. I need to relax a bit more, and start getting more sleep. I had been used to getting 4 hours per night since I was a university student. That's still the norm for me, although when I'm exhausted, I can drop off for many more... Lately, I've only been getting 2-3 hours a night, and that just isn't enough, even for me.