Masturbate more frequently.
Not just for pleasure but for strength n endurance. Till you develop blisters on your dk and corns on your hands.
Keep your diet up with plenty of protein (you'll need that) and plenty of fluids (you'll need that even more).
The beauty of this is that you don't have to be just at home to train this way. You can do it in the gym after your workout as a finisher. At the beach as part of a workout in the open or even on the subway on the way home.
You can even do it while waiting to pick up your kid from school or even a quick yank under the table at that social dinner at your in-laws.
There's literally no excuse to not be training every chance you get.
As a bonus, you'll meet a lot if like minded enthusiasts to widen your social circle.