Sugar addiction: How do I break the cycle?

I’ve developed a strange addiction, and it’s sugar. Every time I hit a coffee shop, I’ll grab about ten of those little packets and eat them right there. When I’m home, I just grab a bowl of sugar and eat it by the spoonful. It’s gotten out of hand, and I can't seem to quit.

It uses a stevia-based sweetener, which means that sweet aftertaste tends to linger on your palate a bit longer.

What kind of addiction even is that??? It's straight-up excessive! Honestly, it’s way more damaging than smoking or drinking.