Just a little about me, I completed 3 tours in Iraq working as a Civilian Affairs Linguist. As far as jobs in the military go you rarely get close to the people in the combat zone, you just experience amazing levels of horridness every day! After finally coming home it was very difficult to relate to anyone without feeling judged. Nobody knows exactly what I experienced, but I became isolated and ended up avoiding any interactions.
I never gave it much thought, I just figured this is the way life is going to be. By this I mean, not being able to trust anyone or make any friends(wife and family included). I drank more, slept less, and had horrid night terrors, as well as terrible daydreams to the point of being paranoid and flinching at every sound.
One a random day, someone gave me the idea to get a dog. I 100% doubted it would help. The first couple of nights, I still woke up to random sounds(like neighbors closing their doors) and so did my new dog/beagle puppy “Kona”. Once I was up, I used to never go back to sleep. Lack of sleep for me leads to a lot of negative side effects. After a while, Kona was getting up at the random sounds and I just rolled over and went back to sleep. Probably the first time I felt comfortable like that in 10 years.