Grow beyond your current boundaries.
Maximize Your Learning
Meet Toni
Seek Change Coaching and Consulting is a business born of love. I utilize a strengths-based approach to coaching, consulting, and professional development grounded in hope, gratitude, curiosity, and a commitment to continuous growth. Developing close, personal, and trusting relationships with the people I work with is the foundation of my work. The shared partnership and authenticity we develop further enhances the effectiveness of our time together. I see and expect the best future from our learning community, and this vision drives my belief that someday all professional communities might also be places where stakeholders are fully seen, heard, welcomed, valued, and celebrated.
Why Choose Me?
I have a proven track record of results. With more than 20 years of experience supporting and developing people, I am confident in my ability to provide support and drive growth, especially in a fast-paced, stressful, and complex environment. I am used to upholding high expectations and delivering results despite a multitude of challenges.
I lead people and teams with care, compassion, and empathy; especially in these post-pandemic times that have resulted in unimaginable and unprecedented struggle. I leverage goal setting, planning, curiosity, innovation, and a cycle of feedback to support clients in making change and achieving their personal and professional goals. I nurture and empower clients to develop greater authenticity, engage in healthy and productive struggle, and navigate emotions effectively; all without ignoring our shared humanity. Together we will create better outcomes for people and teams, and stronger and healthier organizations for the communities we serve.
Services
Leadership Coaching
Leadership Coaching
Leadership Coaching
I coach leaders by creating a reflective, supportive space that challenges them to grow with confidence, authenticity, and purpose. Through our work, leaders gain clarity on what they want, how they want to lead, and the habits that will sustain them. I help them navigate change, make better decisions, and expand their capacity to lead with courage and integrity.
Life Coaching
Leadership Coaching
Leadership Coaching
As a life coach, I help people of all ages (kids, too) pause, reflect, and reconnect with what matters most. Together, we unpack what’s getting in the way, clarify what you want, and build the habits and mindsets that help you move forward with confidence. My coaching is collaborative, honest, and deeply supportive—an opportunity to think
As a life coach, I help people of all ages (kids, too) pause, reflect, and reconnect with what matters most. Together, we unpack what’s getting in the way, clarify what you want, and build the habits and mindsets that help you move forward with confidence. My coaching is collaborative, honest, and deeply supportive—an opportunity to think more clearly, act more intentionally, and thrive more fully at any stage of life.
Professional Development
Professional Development
Professional Development
I design and facilitate professional development sessions in close partnership with clients, ensuring each experience is aligned to their goals and priorities. Grounded in both leadership and humanity, my sessions create space for reflection, skill-building, and practical application—supporting leaders and teams to grow in ways that are authentic, sustainable, and impactful.
Consulting
Professional Development
Professional Development
Through a blend of planning meetings, site visits, and observation with feedback, I partner with clients to think strategically and act with clarity. My consulting work focuses on helping organizations translate vision into detailed, actionable plans that drive meaningful progress toward their goals.
More About Me
Experience and Education
Antonia “Toni” O’Sullivan is a seasoned coach, organizational leader, and proud mom of three. With more than 20 years of experience developing people and teams, she has built a reputation for empowering people to grow with clarity, confidence, and authenticity.
Most recently, Toni served as an Assistant Superintendent for a charter school district, where she coached and supervised senior leaders, guided organizational strategy, and built systems to drive excellence across multiple teams. Her leadership journey has taken her from founding and scaling new organizations to coaching executives and rising leaders, always with a focus on equity, empowerment, and sustainable impact.
Toni’s career has also included international experience in London, where she researched leadership and organizational effectiveness while collaborating with global leaders in education and social impact.
Born and raised in Jamaica, Queens, Toni holds dual degrees in History and Human Development from SUNY Binghamton, along with a Master’s in Leadership and Management from Seton Hall University. She brings curiosity, warmth, and a deep commitment to helping leaders unlock their potential—whether they are just stepping into leadership or leading at scale.
Perspectives & Impact
100% of clients agree that, as a result of coaching, they receive quality support for their well-being and can more effectively sustain and thrive in leadership.
From Kelsey Meyer, Program Manager at Google:
"Working with Toni has been a truly transformative coaching experience. She went beyond simply helping me navigate a career change and instead helped me understand myself, my strengths and motivators on a deeper level. She’s an incredible leader who builds the strongest teams and I’ve learned so much about my leadership style and areas for growth. I can't recommend her enough."
From Kasiopia Moore-Watts, Principal of Campbell Hall, Studio City, CA:
"Toni helped me navigate one of the most challenging seasons in my leadership journey. She brings not only a sense of heart and calm to every coaching session, but also a powerful clarity that leaves you feeling inspired and ready to forge ahead. After each session, I felt truly seen and supported, and I always walked away with a clear, actionable plan for my school community. Toni’s presence, wisdom, and authenticity make her an exceptional coach and an even more extraordinary human being."
From Candice Seagrave, Principal of KIPP STAR Harlem College Prep Elementary School
"Toni has been my coach since year two of my Principal-in-Residence journey, and I truly wouldn’t have made it through my leadership path without her. Her guidance, wisdom, and care have shaped not only the leader I’ve become but also the mother and person I am today. There were moments I wasn’t sure I could stay in this work but Toni’s coaching kept me grounded, inspired, and growing. I can’t count how many times I’ve said, “Well, this is what my coach would do,” or “Let me ask Toni.” I highly recommend Antonia as a coach and mentor. She has a remarkable way of helping you uncover your authentic leadership voice and stand tall in your truth. I’m forever grateful to call her not just my coach, but my amazing friend and mentor."