List the ways in which an …

Track your cash flow: How much money do you have right now? Can you pay your bills? What if your biggest client went elsewhere? Ideally, you have three to six months of funds tucked away to cover expenses. Be conservative. Ask your vendors for sixty or ninety days to pay. You should always know your financial status, good or bad, and have a realistic contingency plan.
Listen to alerts: If you've hired well, or have close advisors, you can trust their doubts. Are they seeing something concerning in a contract, employee, vendor, or opportunity? It's easy to dismiss others' opinions, but you need to listen. They have your best interest at heart, even if you don't want to hear it. Thank them and reward them.
Get legal: Truth is, you can't grow and succeed without legal advice. Hire an accountant. Form an LLC to limit any liabilities, rather than have your personal finances be at stake. Have an attorney review your contracts. Yes, it costs money, but you can't afford to protect yourself. Chances are that at some point, you will be glad you had the foresight to hire professionals.
Avoid commitment: It may feel secure to sign a long-term office lease. Until you are firmly established, you need to be nimble and able to make quick adjustments. Clients change and projects go sideways. You may decide to narrow your focus...or expand it. Something like an expensive address can become a detriment. Whatever it is, be cautious about committing to anything that could be a drain on your finances.