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EXPERTS - Team Leadership

Long-term success depends much more on EQ than IQ, especially in our rich and diverse 'global village'.  Although being a challenge for many, the ability to develop high-quality, high-impact relationships across cultures is a cornerstone to business and personal realization. 
Zest supports your teams to achieve those goals
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Didier Gonin
Team Leadership Expert

Didier is expert in various Leadership and Coaching programmes for senior management, building on an international career in EMEA. 


Having been MD of the Center for Creative Leadership in Europe, he developed many leadership programmes across the globe, published “The Learner Within” and edited white Papers on  “Innovation in Leadership Development” and “Global Leadership”.

Johanna Grosgurin
Team Leadership Expert

Johanna coaches Executives and facilitates Leadership and Change Management programmes for international companies in high-tech, manufacturing, pharmaceutical, FMCG or service industries.


Previously, Johanna worked for PDI where she delivered assessment and development services across the European Region, for Mid-level and Executive Managers.

Ruth-Ann Lake
Team Leadership Expert

A native American with triple citizenship (USA - Italy - Lebanon), Ruth is an expert in Cross-Cultural Team Management and Negotiations, Change Management, Influencing across Organizations, Women in Leadership and Conflict Management (see some of her work).

Her passion for diversity and her experience across cultures bring an indispensable perspective to global business leaders. 


Ruth-Ann works in English, Spanish, Italian and French.

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Olivier Courtois
Team Leadership Expert

Olivier has over 30 years of experience in leadership transformation on 5 continents, with practical and theoretical background. 


Building on his experience as Managing Director at Korn Ferry Advisory BeLux, he designs and delivers solutions in executive assessment and development, top team performance and change.


A passionate business developer, Olivier is a certified practicioner of MBTI, HOGAN, DISC, CCL, 360° Voices, KF Leadership Architect, etc


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Patrick Lybaert
Team Leadership Expert

Echo Yu
Team Leadership Expert

Patrick is director of theExecutive Leadership Foundation and core faculty of the Erasmus Executive Development (see some of his work).


As trainer/coach over the past 25 years, he specialized in leadership and executive development, to support culture change projects and acceleration of individuals and organizations. 


Patrick works for a range of international companies, e.g. in pharmaceutical, technology and service industries.

Born and raised in China, Echo started her career in HR and Leadership Development with Nestle and Unilever in Beijing.


After participating to the economic and society evolution of China, she went overseas and thereafter took up Canadian citizenship.


Involved in large scale OD and leadership programmes in a global context, she worked and lived in different countries in North America, Europe and Asia. She is today based in Singapore .


Core Team
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