If you're trying marketing because you're expecting a miracle, you're going to have a bad time.
Marketing isn't a magic bullet that is going to save your company from bankruptcy. It might, but more likely, you're just going to be burning through your money more quickly.
Marketing starts with a strategy - you need to know what you're doing.
Thinking about purely marketing tactics are short term, and are unlikely to make a lasting positive effect on your company.
With potentially terrible economic times coming ahead, many businesses are going to close (and many already have). However, there is hope, and marketing can help (just don't wait until it's too late).
While customers are looking to tighten their purse strings, it's more important than ever to give them a reason why you're still worth paying for (and reducing your prices is not necessarily a good idea).
You can use marketing to your advantage and push on, or make no changes and expect things to improve (but how realistic is that?).