Sammy,
don't make excuses and set a realistic, manageable workout schedule for yourself.
I'm 35, married, have a child, and run my own business which actively takes about 60 hours of my time per week (I work 7 days). My schedule is hectic and unrelenting, and I've been doing it for 6 years straight. Until about 7 months ago, I was a smoker (1/2 to full pack a day), was indiscriminant about what I put in my body, and got little or no excercie. Then I decided to make a life change. When I started, it was difficult to do three 3-minute rounds on my 75lb bag, or skip for more than three 3-minute rounds. Bottom-line, I was a sloppy, weak-ass turd.
My workouts take an average of 45 minutes, about 4 times per week. I mix it up between heavy bag work (structured timed rounds or Bas Rutten MMA workout), double-end bag work (structured timed rounds), Tabatas (push-ups, sit ups, Hindu-squats), skipping rope, and assorted, albeit very core-oriented, weight training. I'm still not smoking, eating well, taking a select few supplements (a basic vitamin, an Omega 3-6-9 fish/borage/flax oil combo, and a daily protein shake) and feel pretty fucking great.
The changes in my body have been significant and noticeable to everyone. I can now skip for over 30 minutes straight, can do an assortment of body weight exercises, and I now use a 200lb heavybag as the 75lb bag is far too light now.
Don't make excuses dude. It's never too late to invest time into your health, because in the end, without your health, you have fuck all.