addictions zen and rebooting

hi
I am currently on my second reboot after breaking a 7 month streak with two weeks of porn. this time ive been doing a lot more introspection and meditation, hoping to understand why i became an addict. i know that there is a physiological addiction caused by the chemicals released in it, however many research today shows that even the chemical and physiological aspects of addiction are usually not the main cause, and there is an underlying cause to it.
this ted talk sums it up nicely:

So in order to find the root cause of my addiction im trying to look deeper, see what insecurities i have, and see what "Hole" in my life i am trying to fill with this addiction. the answers i arrived at with myself were very much related to my fear of loneliness, my low self esteem and my fear of being socially isolated. im sure many people would relate, as a child i was somewhat of an outkast during most of my middle school and high school years, i also lost my virginity at a very late age (i havent had much interaction with women until i was 20). during most of these years i was watching porn on a daily basis, with the porn genre becoming more extreme each year. i stopped porn after i had ed with my ex girlfriend.
While doing all this i started thinking of my other addictions as well. my addiction to coffee, sugar, social media and TV. i also used to be addicted to video games. while learning how to meditate i understood how difficult it was for me to sit in an empty room without anything to distract me. suddenly i understood the cause of my addictions.
my life socially speaking has much improved since high school, my dating life as well, yet this fear of being alone by myself is still there, its still the root cause of my addiction. i was afraid of the nothing that is in my existence. i was afraid of the emptiness in being alone, in having nothing to do, thats the reason that when im traveling, or when i am working the cravings arent there. i have through years of being detached socially, and being a depressed teenager made the connection to others, a social life and a romantic relationship as the things that give my existence purpose. when things were good in these areas, i was happy, and i didnt feel the need for anything, however this is always short lived. i am using meditation as a way to cope with this emptiness and it definitely has been helping with some of the addictions but not all. he truth is the outside circumstances are never gonna be perfect, and while i can be happy at times im trying to be detached from the circumstances, and not let them control me and my emotions. nothing outside will fulfill you in the long run, no relationship or friend or money or anything! and the only way to combat your addiction is by dealing with the root, what is the addicting filling in your life? especially with a harmful one like porn.
i really hope this message helps other people struggling with addictions, however big or small and i would be happy to hear about how to relinquish this fear of emptiness and lack of fulfillment, so that i and others could learn to be at peace even when the outside circumstances arent on our side.
i would like also to hear how other seemingly unrelated addictions affected your reboot, or maybe were affected by your reboot.

ps. i recommend for everyone on their personal journey the book "The Power of Now" by Ekhart Tolle, it has had an incredible impact on my life and my journey.