Do you want to keep a track of your spending? Keep a Spending Diary!
Keep a little notebook and pen in your bag or pocket and write down every time you buy something. It doesn't matter how small the purchase is, whether it's a chocolate bar or a single envelope just remember to write it down.
At the end of each day, add up the total cost of everything you've purchased. You'll soon start to notice patterns in your spending - too many morning coffees or unnecessary vending machine visits! This will help you to notice where you can cut down and in the long run, you'll find it easier to save,
Good luck, let me know how it goes!