Did you really give up on yourself? I bet that you are still committed to losing weight you just haven't been lately. If you really want to do this you can, and don't beat yourself up over having trouble sticking to a routine while you've undergone a huge change with your new job (which, congrats by the way!).
Good for you for recognizing that eating is totally in your control. Start counting calories and realize how much sweet tea eats up of your calories and leaves no room for nutritious foods, protein, fiber, etc. Bring your own iced tea to work, one with artificial sweetner or a squeeze of lemon or something. If you eat their food, just make sure you log the calories. That motivates me more than anything to cut out certain foods- the realization that I can't "afford" to spend my calories on them.
Where I live right now it's 95-100 degrees every day, so I totally hear you on the jogging thing. Fortunately there are tons of FREE exercise videos on YouTube. Yoga, tae bo, boot camp, resistance band workouts, etc. Try to get in 30-60 minutes of those videos in several times a week to incorporate exercise back into your routine. Or, when you wake up in the morning, do a set of planks, pushups, jumping jacks, jump rope. Anything to get moving again! I work out a lot at home now because of the weather and I know it can be done