I GOT OUT OF THE ARMY IN 2006, AFTER TWO LONG TOURS IN IRAQ IN WHICH I SAW CIVILIANS KILLED, HUMVEES EXPLODE, AND FRIENDS LOSE THEIR LIVES. I STRUGGLED THROUGH ANGER AND DEPRESSION UNTIL I FINALLY FOUND MY WAY—ONLY TO REALIZE THAT I WAS LOSING TOUCH WITH THE WAR THAT HAD MADE ME WHO I WAS. THEN I KNEW: I HAD TO GO BACK.

Interestingly, this is the plot line for the character Jack on LOST.

Although you have to substitute "Iraq" with "the island".