Hi megan, and welcome!
I've only started trying to lose weight recently, but impulse eating has always been a big problem for me too. I feel like counting calories has been a huge help with that over the past few weeks. Now that I track everything I eat and drink I can see exactly how all my meals and snacks are impacting my daily total, and foods I would have grabbed without thinking about it a few weeks ago now set off an alarm in my brain -- and I go for something much healthier instead.
Regarding tea... I usually drink it iced, because my husband makes the best iced tea ever... but his trick is using about 2/3 green tea and 1/3 black tea. The black tea seems to give the green tea more body, and pumps up the flavor. We like to mix some plain orange pekoe or earl gray tea with a mango or peach green tea, but there are also some great flavored black teas out there (celestial seasonings has a bunch of good flavors). Also, teas made with hibiscus are super flavorful - really tart and unique.
Congratulations on all the weight loss you've achieved so far, and good luck with your new goals!