You stated that long hours of isolation and stress are the main factors of your addictions.  During my teens years I had a lot of painful, stressful emotions going on and became totally addicted to TV.  It was the only way to get my mind off the pain.  Then during my early 20’s I discovered exercise, specifically running.  It got me out of the house, helped clear my mind, reduced my stress/anxiety and was a lot healthier than being a couch potato watching TV.  I’m also an introvert and this helped me meet some people and not feel so isolated.