That history is critical in rebuilding a good credit history. If you lost your cards in the bankruptcy, you might talk with your bank or local lender about establishing a secured credit line. That can help you begin to regain their confidence over time. Eventually, they may be willing to grant you unsecured credit. As I'm sure you've discovered, bankruptcy isn't an instant solution to credit problems.
Time is key.
Take the time to get some personal financial management training. When you do rebuild your credit, use it wisely, and don't make the same mistakes a second time. I hope your next film is a blockbuster. But I also hope it's not secured with your personal assets. Thanks for asking.