wow, you've had so much success already. Two things I've learned that really matter in weight loss are 1) your mindset and 2) what you eat. The second one might seem kind of obvious, but there's more to it than you think. It's not all about eating less food, although that does help, but the foods you choose change your mood, motivation, and hunger. For example, if I spend 200 calories of my day on sweets, then I'm just dying for more sweets. If I spend the day snacking rather than having meals, then I'll want to just keep snacking after I reached my calorie limit.
As for evening snacking, Tanna's suggestion of gum is a good one. Also, making sure you ate a dinner that's high in fiber and protein helps me to stay satisfied until breakfast. If a snack is warranted, popcorn can be an excellent choice (high fiber, low calories!). Also, I've found that (for me atleast) exercise curbs my appetite a bit. On days when it's the opposite, I can always eat a little bit more, because I burned more calories.
Nice to see you here