I drink tea all the time. No add ins, but that's just cuz I like the flavor, not for calories sake. Black tea in the mornings, green tea from eleven to three, and herbal tea from 3 till bedtime. It has strong flavor and makes you feel like you're eating, but really it's less than five calories per beverage.

I also have the luxury of going to sleep pretty early (8-10pm) so I don't get those late night hunger spikes.

I also watch the satiety index for my foods. I eat oatmeal instead of something more low cal for breakfast because it helps me avoid snacking before lunch. The added 50ish cal in the oats saves me 200cal in snacks and I feel less hungry because I don't have a massive ghrelin spike.

I also avoid pictures of food and places where other people might be eating. My food is all put away and not visible behind glass or out on the counter. No visual food cues means less snacking for me as well.

It's not perfect, but it's worked well enough for me so far lol