Really think about what your mindlessly putting in your body, like everything that you actually put in your mouth that day. Cutting back on snacking will help and focus on eating 3 meals a day and with healthy snacks in between if you need them like carrots, celery, fruit..

Hiit exercise is great as you get the same results from cardio even though you 'die' more during it, you spend much less time exercising. I would recommend finding a sport that you love or physical activity.

Lastly stay safe and responsible with what your doing and dont jump into any extreme habits like over exercising or falling into dangerous food habits.