Untitled AI art by @logical-cedar1

A4 book cover (210x297 mm, vertical), a serene minimalist design with a chaotic yet harmonious background: swirling storm of deep blues, stormy grays, and hints of purple fading into a tranquil center. In the middle, a lone silhouette of a person sitting cross-legged in meditation, surrounded by a subtle glowing aura of soft gold or white, symbolizing inner peace. Above, bold and elegant title "Mastery of Mindfulness: Find Peace in a Chaotic World" in a modern sans-serif font (white or gold), centered in the top third. The inside flap (форзац) features a clean, light background (white or pale beige) with the quote "One moment — and you are the author of your story. Write it boldly! — Alex Grynvei" in italic dark blue or black font, centered. High resolution, balanced composition, evoking calmness amidst chaos.