I was just talking about this the other day with someone. I look forward all the time now. 40 helped me focus. I believe you need to do that and think about your health - all of our quality of life depends on good heath so if you're not in shape - get in shape - if you are - stay in shape. I think your physical fitness will do alot to dictate how you feel and what you can do as you move into middle age and beyond. I'm not talking about training for a marathon or anything but I think it's hard to decide when you're in your 50's that you want to get in shape. Bring good physical fitness forward out of your early 40's and fight hard to keep it - you'll age better and probably have a much happier experience in your 60's and 70's. I'm not a doctor but I do play one on television. Those are my thoughts on turning 40. Now go hunting.
40 is no big deal passthrough. Hopefully your in a good spot in your life by then and you can focus on family, friends, enjoying life and spending more time doing the things you love, but weren't able to do when you were younger. We should all follow bgoods advice.
Hunt as hard and fish as hard as you can while you have your youth cause its gone soon enough. Oh and take care of your body because when you get older and you don't then you will have to resort to other methouds of hunting that the young boys will frown on then.Such as baiting and let then come to you.