I try to limit my cups of tea to 3 a day at most (since I've tried drinking them without sugar but they just taste gross and sweeteners have a horrible chemical taste, not to mention they're probably full of other stuff that's no good for your body) and I also try my best to avoid rubbish foods - be it fast food, sweets and chocolate, fizzy drinks, etc.
When I get hungry, I instead have a large bottle of water and have a drink from that as it does work like an appetite suppressant (as my parents would often tell me "don't fill up on water!" before my lunch/dinner was ready).
As for exercise, I've got a pedometer and I go for walks - aiming for at least 10,000 steps a day; taking my bottle of water with me by carrying it in my backpack, as you see joggers do, so I've got something to drink and I'm less tempted to go into a shop to buy fizzy drinks or something unnecessary.
If I do feel the urge to get something I shouldn't, I try to distract myself so I can drink some water and walk away - as the urge will pass. It's like an addiction - you choose whether or not you're going to submit.
Additionally when exercising, remember to have days where you relax a bit more and let your body recover as that's part of the process.
Doing just these two things - cutting out junk food and walking daily - has helped me lose nearly three stone since the start of the year. I weigh myself once a week on a Saturday; if I've lost weight, then I treat it as a "cheat day" and have something unhealthy as a reward, while if I've remained the same or gained then I don't, so it acts as motivation for me.
While there have been times where my weight remained the same or would go up even after the exercise and proper eating, it is part of the process as your weight does naturally go up and down or stay in one place - even for multiple weeks sometimes. As such, if you spend a few weeks not moving or going up and down like a yo-yo, don't let it depress you; it's natural.
Additionally, if you do slip up during the process, don't panic and just get back on track the next day - not letting that "slip" turn into a "slide".
Things like fat jabs and other quick fixes may sound great, but they can come with other issues and they don't address the source of the problem - which is your mind, as that's where your choices and urges start.
Unless that's treated as well, you'd lose the weight then immediately reset into the mentality of "Yay! I can stuff my face with junk food again!" and before you know it you find yourself back to square one or near enough.
I get wanting to lose weight rapidly, but the slow and steady path doesn't just help you lose the physical weight; it helps your mental state so you can shed the unnecessary urges and better your mind to keep going down the positive path. That way, when you lose the weight, you'll be better equipped and willing to keep it off without sliding back into old habits.
The best way to look at your long term goal - if looking at it is stressing you out because it seems so far away - is to break it down into increments.
Losing the correct amount of weight is a long way off, but a much closer goal is to get rid of the junk food in your house to remove temptation, while another closer goal is learning to use the dumbbells properly, and another is getting a pedometer and trying for 1000 steps in a day, then after that maybe try for 2000, etc.
By mentally breaking your path down into smaller and more reasonable increments that are easier to achieve, it helps make your goal a lot easier to accomplish and makes you more willing to try - instead of literally/metaphorically slumping down with your head in your hands, stressing about how far away your end goal is when you're looking at the entire path.
Hope all this helps, and apologies for the word salad.
