I love to hold forth on every subject that comes across my radar screen, pouring playful and possibly insightful words into every issue that concerns my fellow professionals. Switch fields only if you hate what you've been doing. Starting from scratch can be frustrating, and a road to disaster.
Many businesses take three years to turn a profit.
Be sure you have your spouse's support to stop receiving a predictable income. Don't burn your bridges. Set up a comfortable desk, chair, and atmosphere, safe from interruptions. Dedicate a computer, phone, and fax to your exclusive use. Set up a separate checking account in your business name.