Automatically put pay in savings account.
Have part of your pay automatically put into a savings account. All this typically takes is one extra checkbox when you have your paycheck directly deposited.
The financial benefits are obvious. By sending the money directly to an account, you're not tempted to spend it frivolously. Also, it starts earning interest immediately. The system also saves you time and you won't waste gas by driving to the bank to make the transfer between accounts.