Don't go to the gym, the reason you have trouble doing that is because it is boring.
Find an activity you enjoy that involves physical labor, and do that thing. Since you enjoy it, the 'work' of exercise won't feel like work - it will be something you want to do because you enjoy it. Explore different outdoor activities and sports, and you'll find one that suits you.
Presently for me this is building a small farm. Before that it was learning to surf. Before that it was cycling for distance. The neat thing about all these is unlike gym time you are building real skills as you do them and they are rewarding beyond the calories burned and the physiological changes.
The gym is hard because other than the physical effects it is dead time, and you know it.
Find an activity you enjoy that involves physical labor, and do that thing. Since you enjoy it, the 'work' of exercise won't feel like work - it will be something you want to do because you enjoy it. Explore different outdoor activities and sports, and you'll find one that suits you.
Presently for me this is building a small farm. Before that it was learning to surf. Before that it was cycling for distance. The neat thing about all these is unlike gym time you are building real skills as you do them and they are rewarding beyond the calories burned and the physiological changes.
The gym is hard because other than the physical effects it is dead time, and you know it.
Although for some people the iron is that thing that is quite soothing: http://www.gittlen.com/rollins.htm