By Sénamé Agbossou "I should be grateful. My agency is successful, my clients are happy, my team is growing. So why do I dread Monday mornings?" That's how Rebecca introduced herself during our first coaching session three years ago. On paper, she had everything a business owner could want. In reality, she felt like she was running someone else's company. The Success That Wasn't Sustainable Rebecca had built her marketing agency from nothing. Starting as a solo freelancer eight years earlier, she'd grown it to 25 employees and consistent seven-figure revenue. Industry awards lined her office walls. Client testimonials praised…