Join the military! If you do 4 years and survive that then you can complain... if you are really fit and want a challenge, then once you are in try out for some of the special forces. If you want it hard join the Marines or Army, easier...then Navy or Air Force. Of course depending on what you do in each branch will make a difference in how you are challenged!
I was much as you 40 years ago, only wasting away on drugs, joined the Air Force and never looked back until I did my 20 ...now I can complain!
Living the dream, inside a myth