Good on ya, this is a great goal. :) What I’ve found helps is writing down in a notebook (or with Microsoft Excel) every single item you purchase at the end of each day, and the amount it costs. After each week/month, you can add up and work our exactly where you’re spending your money… Some seemingly cheap routine purchases such as a coffee from Starbucks end up costing a heck of a lot over the long term! Best of luck with this goal.