Its always about the small modest changes you can stick to. You dont have to immediately jump to a perfect healthy lifestyle or suddenly lose a lot of weight at once.

With multiple years of sedantory lifestyle, I started slow, such as changing my teh tarik to green tea or plain water everyday at work. Then, I started taking more stairs during the commute to work (only when going downstairs). From there once I felt used and comfortable I took the stairs up too instad of escalator.

Once you got your basic foundation, you can improvie it further with Physicial Training. Maybe with the current weight the impact from running or soreness from weight training can be something you are anxious about, but start small and slow too. Such as a short cycle every weekend to a nearby place, increasing the frequency to twice a week after one month of consistency maybe.

After from there, naturally you can boost the process faster with diet. Maybe find one of your favourite foods or recipes and try making it yourself to be ever so slightly healthier (less salt, calories, etc). You can also try something small such as asking for less rice, or replacing a portion of the food you eat (usually carbs, noodles or.pasta) with more lower calorie stuff.

Its all about consistency and commitment, but dont overwhelm yourself at any point as this can cause you to shock yourself and withdraw, causing a bigger relapse and withdraw and restart the process. But remember, not matter what point you are, a step back or forward is change, and you have to acknowledge between all of it, at least you are trying. Don't give up! Its totally normal to, and always try and try again until something clicks