Self-Help Book Rewrite Needed

I'm seeking a skilled writer and editor to revamp my self-help book manuscript, which was rejected by Amazon. The primary audience is working professionals, and the book aims to provide practical advice.

Key areas needing improvement:
- Grammar and language
- Content and structure
- Tone and style

Ideal Skills and Experience:
- Proven experience in writing and editing self-help books
- Strong command of grammar and language
- Ability to restructure content for clarity and impact
- Adaptable tone and style to engage working professionals

Please provide samples of similar work done.