Mamie's the best one to spell this out, but I'll have a go.
Firstly, cut out all sugars. Apart from the white stuff you add yourself, that includes cakes, biscuits, chocoate, sweets, etc.. I'm sure you can complete that list yourself. Cut out fruit juice too. Very high in sugar.
Next cut out pasta, bread, rice and potatoes. All those starchy carbs which quickly turn to sugar (glucose) when digested.
It's also a good idea to cut out (or cut right down) on root vegetables such as carrots and parsnips and peas and beans, at least at first. Fruit is high in sugar so limit to one a day, preferably berries.
Now concentrate on what you can eat. Cheese, eggs, fish,meat, nuts for protein. Full fat dairy, full fat natural yoghurt, butter. Loads of vegetables especially leafy green ones, onions, peppers, mushrooms.
Substitute cauliflower rice for starchy rice, substituted spiralised vegetables for spaghetti.
You say you're fairly veggie but that must mean you eat some meats and fish. Try lighter meats such as duck - duck stir fry is quick and tasty.
I'm sure someone will give you a link to the low carb support thread too.