Stay Motivated or die.

Stay motivated and keep track or where you are by, Testing yourself every two or three months. Find out how many Pushups you can do, time your next All-out Mile, and start the watch next time your treading water. Keeping a log of these thing will keep you motivated next time your feeling lazy. I also recommend taking pics, even if they're cheap or awkward looking, hang em up somewhere you can see. Three weeks ago I snapped this pic of myself...

And Today I counted my total one set numbers for 130 lb Upright Rows, 100 Lb Leg Levers, and 25 Lb Russian Twist...80 Reps for the Rows, 120 Reps for the Levers, and 160 Reps for the Russian Twist. 
After Training I had an EAS protein shake-
 
Keep Track, and motivate yourself.