How can you make spending money harder than earning money?
Take the time to think about and make a list of things you can do to make the amount of money going out less than that coming in.
Examples: lock your money in a term deposit account, create a weekly/monthly budget, spread the money between different banks with no easy card/checkbook access, etc.
And if you are really serious about growing your wealth, check out the Grow Your Personal Wealth workshop.