Good idea to review one's relationship with sugar. To reduce it. Physiologist and nutritionist John Yudkin wrote a book, 'Pure, white and deadly' in 1972. He was shunned by medical communities. Shame.
Sugar's highly addictive. Inflammatory. Wreaks havoc on insulin response. And impacts mood. Of course as it's highly addictive, coming off it can be tough. Begin by looking at your current intake. Consider it's hidden in a lot of ultra processed foods too. High insulin levels lessen insulin receptor cell sensitivity and increase blood viscosity.
A lot of weight issues are driven by excess of fast carbs and refined sugars. They are converted quickly into glucose, and then increase the load on the pancreas. Over time, this can also lead to fatty liver.
One can of coke 330 ml as an example has circa 9 teaspoons of sugar.
Taking an audit of your own general regular sugar intake e.g boiled and jellied sweets, sugar in tea/coffee, fizzy pop, white rice/bread/pasta, ice-cream, biscuits, cakes, pastries, ketchup, some crisps...
Start somewhere. Your mood, joints, sleep, hormones and much more will thank you hugely. Be kind in this exploration. There are many underlying emotional issues tied to sugar reliance.
Let me know so I can cheer you on!