High Performance Coaching


High Performance Coaching



pushes her clients
to their Next Level


Bastiaan Kollen

Play Video


Bastiaan Kollen

Play Video


hello I'm Bastiaan
your new trainer/Coach

Welcome to WE ARE PASSION, where we believe in your potential to achieve your dreams and unlock your full capacity. Our coaching, workshops, lessons and other products are designed to help you develop a winning mindset, elevate your tennis game, and reach your highest level of performance in all areas of your life. WE ARE PASSION is dedicated and passionate about helping you awaken your true potential, and we are committed to empowering you with the tools and knowledge you need to succeed. Join us today and experience a new sense of empowerment, joy, and energy as you unleash your full potential with WE ARE PASSION.


Mental Growth


Personal Development

Tennis Development

Tennislessons & Knowledge

about me

hello I'm Bastiaan Kollen your new Trainer/Coach..

Welcome to my website! My name is Bastiaan Kollen, and I’m a passionate tennis player, sports enthusiast, and avid student of psychology and mindset. For as long as I can remember, I’ve believed in the power of our dreams and the potential that lies within each of us. That’s why I’m dedicated to helping people reach their full potential both on the court and in life. Based in the Netherlands, I’m currently studying psychology and I make it a priority to invest in my own personal development by taking courses and exploring new products every year. My mission is to help you unleash your true potential and achieve your goals, and I’m excited to share my knowledge and experience with you. Whether you’re a competitive tennis player looking to take your game to the next level or simply seeking to grow and evolve as a person, I’m here to help. Let’s start this journey together and unlock your full potential with WE ARE PASSION!

Latest blog posts

Read here our latest blog posts about tennis, high sport performance, mindset, health and other very cool, inspiring and good stuff!


Hi Bastiaan. A quick note to say that after attending your courses, i achieved one of the items on my "fridge door bucket list" for 2022! I ran the half marathon in Amsterdam. Your courses in Weesp last spring, certainly were a factor in me achieving this. So thanks a lot for that. And the bonus was that i "smashed" my under 2 hour personal, with a time of 1:54:47. Thank you very much for the positive impact your courses & support had!
Sean Maguire
Member of Weesper Tennis Club
Hi Bastiaan. After participating to your workshops i gained much more awareness of the power of my thinking. I learned that positive thinking influences the way we are on the tennis court, it influences the way we are in life. Thanks to your inspiring work I have taken big steps in taking control of my thoughts, emotions and my behaviour. I received the tools to realise my goals and dreams. I am motivated to become the BEST version of myself.
Nicole van Zuilen
Member of Weesper Tennis Club

book a coaching session

Ready to unlock your full potential and achieve your dreams on and off the court? Book a coaching session with me and let’s take your game – and your life – to the next level!

Follow Me:




+31 648447667

Adress: Cambridgelaan 411, 3584 DC, Utrecht, The Netherlands

Welcome to my website! My name is Bastiaan Kollen, and I’m thrilled that you’ve stopped by. As someone who still enjoys the game of tennis every day, as well as life, I know firsthand the power of sports and living life to the fullest. Our time on this earth is a precious gift, and it’s up to us to make the most of it. That’s why I’m dedicated to helping others unlock their true potential and achieve their wildest dreams. Whether you’re looking to improve your game on the court or simply seeking to live a more fulfilling and meaningful life, I’m here to support you. I’ve experienced my own share of challenges, from mental health issues to physical ailments, and I know the value of taking care of our bodies and our minds. So, let’s make every moment count! Whether you decide to join me for a coaching session, workshop, or simply follow along online, know that you are capable of achieving great things. Dream wild, live passionately, and let’s make magic happen together!