Review all costs - suppliers, packaging, postage, software, every penny that goes out of the business ought to be reviewed and checked to ensure that you are:
getting value for money
getting the best price for the service / offering
that it is still needed in your business.
Check your pricing:
are all costs factored into your pricing - including time costs
are these prices correct and up to date
are your margins right to cover your fixed costs
If the numbers aren't great - talk to your accountant and get advice and help before it's too late - a fresh set of eyes can often make a massive difference.