Trained through Thomas Leonard's original Coach University program in 1994 — the training lineage that produced the International Coaching Federation — Greg Clowminzer runs this Tennyson Street coaching practice with more than 18,000 logged one-on-one coaching sessions behind him. Engagements are structured as year-long commitments for CEOs, founders, and small-business owners, and the practice frequently works alongside real estate principals like Three Guys Properties, Inc. when Ocean Beach operators are navigating portfolio decisions and partner dynamics. The methodology draws from the 3 Principles and Inside-Out Understanding frameworks rather than the goal-setting or accountability templates common in business coaching, focusing on how thought creates experience and how that shapes decision-making under pressure. Monthly 'communicating and relating' dyad workshops teach self-reflection practices that clients then apply in operator and co-founder conversations, and coaching often coordinates with legal counsel provided by firms like Grace Law, APC when partnership structures need to be formally revised alongside the mindset work. Sessions skip trauma processing and sales pitches, opening with clarification of what the client actually wants and a diagnostic of blind spots before moving into actions for the current week. The highest-stakes work is partner-conflict coaching, where two co-founders arrive planning to dissolve or sell, and the engagement rebuilds clarity on each partner's contribution and unlocks a renewed commitment to grow the company together.