4 days
It is very short compared to the regulars in this forum. I also quit gambling/going to casinos before, lasted for about 3 months, but a relapse happened when I got bored on a weekend. A relapse that set an unprecedented number of cash advances (debt skyrocketing to the level that I was used to when I was relentless in gambling) throughout my gambling experience.
Last weekend, after experiencing that typical gambling hangover, I went to this forum and read several threads. I found many success stories here, and they really inspired me to change gear and live a gambling-free life. More specifically, I really like the strategies by NewRisingSun among others.

Several realizations that struck me at this point:
1. Getting old and YOLO.
I am getting old, 32 yo single male here, and yet I am in debt. In a few years or so, if my gambling continues, I will be in big trouble. So many what ifs... like what happened if there is an emergency and I need some money and all my credit cards are maxed out because of gambling? What if I become incapacitated and can no longer work? We only live once, #YOLO, and therefore, might as well live this life to the fullest.
2. Second hand smoke!
I know someone who is a regular of a casino who got lung cancer and passed away after a few months when he was diagnosed. His doctor blamed it to his poor lifestyle (staying in casino overnight and almost everyday; his diet was also not good while gambling) and second hand smoke in the casino.
3. Losses.
I only started gambling last April, 2013, and my losses was estimated to be almost $35,000 already (betting minimum almost all the time on a slot machine). Since my money last longer for this betting habit, I used to stay more than twelve hours inside the casino; coming around afternoon to early evening and staying there until the sun rises. Because of this gambling habit, I don't have time to socialize and my work ethic is severely affected.
4. My health.
Since I used to stay for long hours inside the casino playing slot machines, there are days that I experience head aches and eye twitching. I also notice that I am slowly getting a belly. I used to be fit before.
5. Urges
I also realized that the urge to gamble is fueled by similar reasons: 1) boredom, 2) don't waste the free play, and 3) adrenaline rush of big wins. I am working on finding the best ways to answer the reasons for this gambling urge.
My gambling experience has already taking its toll; financially, emotionally, and physically speaking. I am trying my best to fight this struggle of not going back to casinos anymore. I am one with you guys---a gambling addict. Let's win this fight!