I got a gambling addiction and its costing me dearly, almost half my salary goes into lotto, slots and the casino. Mostly online. How can I stop this filthy habit? Any tips?

I'm not experienced in this topic at all, but I still feel the urge to help, so I'm sorry if any of my advice seems obvious or wouldn't help you at all.

Firstly, I would try to figure out what exactly drives you to gamble, what your "triggers" are, and if you can figure those out, try to avoid them. If online ads are what's driving you to gamble, get an adblocker (which i'd recommend you do anyway). If you want something more direct, though, since you said that a majority of your gambling takes place online, you could be able to change your router settings to block access to gambling sites. I'm not sure on the exact steps that would be taken to achieve that, but there's probably guides online. Lastly, simply try to think of gambling as the net negative that it is. When you get the urge, remind yourself of the negative feelings you associate with gambling. Don't try to win back any lost dollars, cut your losses and walk away. The house always wins, and Las Vegas wasn't built on the shoulders of winners.