Client testimonials and references
What clients and participants say about On Course & Partner®
People usually book training, coaching and workshops for a specific reason: an important conversation, a new leadership role, a team going through change, a presentation that needs to make an impact, or communication that needs to become clearer.
Testimonials from companies, leadership development and professional growth
These voices show how clients and participants experience working with Christl Lang and On Course & Partner®: clear, structured, personal, practical and effective.
Martin Montag
Martin Montag was Sales Director at AKDB in Munich at the time of the collaboration. Today he is Chief Customer Officer at iNovitas AG.
LinkedIn recommendation dated 21 May 2026 relating to a training programme at AKDB. View LinkedIn profile
“Christl teaches people how to convince others with ease – in a very authentic, constructive and appreciative way. Together with her, we trained all employees in customer service, including the team leaders, as well as the divisional managers in sales. Each person was challenged as an individual and supported personally.”
“I also took part myself and learned a great deal about how I come across to other people and how I can use my personality and presence appropriately in different situations. The collaboration was extremely valuable for both me and our team. I can wholeheartedly recommend Christl.”
Roche
Feedback from participants in the one-week continuous improvement facilitator programme at Roche in Mannheim.
“I was completely satisfied with the programme. The trainer was excellent, the range of topics was extensive, and the depth and level were highly satisfactory. I can wholeheartedly recommend it.”
“Christl has a professional and well-structured seminar concept that never becomes boring. Her practical group and individual exercises quickly connect theory with practice. She communicates the content clearly and confidently and takes enough time for every participant. Her extensive experience makes her an asset to any training programme.”
“The trainer’s continuous constructive feedback made it possible to apply what we learned immediately in practice.”
Christine Kaulen
Training and Personnel Development at Lufthansa AG.
“I returned to my job enthusiastic and with a wealth of new knowledge.”
“I would therefore like to thank Christl Lang personally once again for this engaging, informative and enjoyable seminar with so many practical elements. I am already looking forward to the follow-up seminar.”
Viktoria David
HR Manager, Arvato eCommerce, Bertelsmann Group.
“I can recommend the programme for developing women’s competence in a business context without reservation.”
“I was surprised by how many new methods were taught and, above all, how sustainably they became embedded through realistic practice. Even after the programme, the skills learned can be recalled and applied again and again. The feedback from the participating colleagues was exclusively positive, and several participants asked for a follow-up.”
Stefan Plieninger
Project Manager, BMW Group.
“The combination of theory, learning by doing and highly useful feedback sessions gave this programme exceptional value for me.”
“The structured design of the programme provides many valuable tools that help you feel well prepared for new challenges. The open and highly engaged group of participants rounded off the success of the event. I can absolutely recommend this programme.”
Sasol Germany
Reference project following a restructuring at the Brunsbüttel site.
Over a number of years, numerous employees and managers took part in open seminars on confident communication, persuasion and professional impact.
Following a restructuring, the technical team and its leaders at the Brunsbüttel site were supported on their path towards becoming a successful team.
What repeatedly stands out in the testimonials
Participants describe content as clear and understandable and report being better able to assess professional situations.
Exercises, feedback and transfer into concrete workplace situations are central to the work.
Many testimonials refer to presence, voice, presentation, communication and confident professional behaviour.
The work is described as personal, attentive and closely connected to each participant’s individual situation.
Find the right format
The testimonials reflect different starting points. For organisations, the focus is often on communication, leadership, collaboration and professional presence. For individuals, the issue is frequently a specific conversation, decision or challenging professional situation.
Would you like to clarify which format best fits your situation?
In an initial consultation, we explore whether training, a workshop, facilitation or individual communication sparring would be the most useful next step.