28,622Leland Reviews

Extremely precision on resume reviews and creates clear direction on each call in order to have the most productive time. Highly recommend for case interviews and networking!!!

Zonta is extremely proactive and was able to get in the weeds about the necessary details while also keeping the big picture in frame. He is easy to work with and flexible, and most importantly, humble and people-oriented.

I came to Dr. Castain when I was already working and getting good roles, but I knew I was capable of more. I wanted to break into a different lane, step into bigger opportunities, and position myself for the kind of work that actually reflects my talent. David helped me reposition my digital footprint, and rethink my approach to the business side of acting everything from branding and image development to public relations strategy, networking, and how to move in rooms that matter. His advice isn’t cookie-cutter. It’s real, direct, and often unconventional. Exactly what I needed to start playing at a higher level. I saw a major shift in my career. The strategies we built helped me secure a lead role in a major Universal Pictures film alongside A-list talent. That was a huge milestone for me, and I can honestly say the way David pushed me to think, plan, and operate played a part in getting there. What I respect about David is that he doesn’t try to change who you are, he helps you become sharper, more intentional, and more aligned with your goals. I appreciate his rawness, his insight, and the way he challenges you to rise to your potential. Working with him has been one of the best decisions I’ve made for my career.

I had a very good experience with Andrea, he helped me prepare the application for the MBA from GMAT to resume, essays etc After our third session he set clear expectations and targets based on my background, interest and where I wanted to live. Then he gave me clear tasks to complete while he took care of almost anything else. Regarding GMAT we did a diagnostic and then based on weak spots and my level per section he prepared a plan with a target exam date. All sessions were super focused and well structured, plus he explained every concept multiple times till it was clear to me.

I went to Columbia Business School with Christina and was always impressed by her ability to integrate difficult concepts and relate things in a way that anyone can understand. She's an excellent coach and highly recommend her insights for anyone.

Thanks to Andrea, I increased my GMAT score from 455 to 705 in less than two months. His approach is very practical and straight to the point. During our sessions, we focused a lot on practice, and he explained the theory and shortcuts in a simple way till it made sense to me. Then he gave me targeted exercises to work on at home, which really helped me improve faster. He’s also a great motivator and knew how to calm my restless mind when I was stressed or doubting myself.

It’s hard to put into words how much Andrea is helping me and how much work we’ve already done together in the last few years. What started with GMAT preparation became something much bigger. He helped me break through personal and psychological barriers, and the impact went far beyond studying, it changed how I approach life. In a way, it felt like he tuned my inner gears. He saw my value before I fully did, and helped me recognize it. That shift gave me a level of clarity and confidence that led to real results, including now studying at HBS, which a few years ago looked like an almost impossible dream. I still work with Andrea today because he’s my trusted go to person. I referred him to a few of my close friends that now work with him and are having similar extraordinary experiences.

Tom is a true professional whose leadership has transformative impacts on the businesses, teams & individuals he works with. I had the opportunity to work closely with Tom on the same team. His powerful mix of product knowledge, business acumen, and collaboration were instrumental in driving both innovation and operational excellence while actively fostering the development of other colleagues (myself included). He has an exceptional ability to quickly identify gaps in processes or product development and take immediate steps to close them through strategic discovery, all while aligning the team around clear, achievable objectives. While working with Tom, it also became apparent very quickly that he cares deeply about supporting the growth of those around him. He was instrumental in my own personal career development while also taking on a mentor role later on. I am excited to watch Tom's continued growth & impact as a leader, and cannot recommend him enough as an invaluable asset to any team/individual.

Working with Dr. David Castain has been one of the most defining influences in my transition into the consulting world. From the very beginning, he helped me understand how to position myself, build a recognizable brand, and approach relationship-building with intention. The way he explained networking, strategic communication, and the psychology behind influence genuinely shifted how I moved in professional spaces. David is the one who encouraged me to take the leap and formally launch my consulting firm. His guidance played a major role in helping me shape the direction of my company and understand the value I bring to the table. I’m proud to say that my first major client was the Democratic National Committee, where I secured a contract conducting political and strategic research. That opportunity was a direct reflection of the confidence and clarity his coaching helped me develop. He is someone I trust to give honest, thoughtful, and informed guidance the kind that accelerates growth and expands what you believe is possible. David doesn’t just teach you how to succeed, he helps you understand why you’re capable of doing it. I’m grateful for every conversation and every piece of insight he’s shared.

Running a culinary business means constantly shifting between creativity and strategy, and having someone who understands both makes a real difference. Dr. David Castain has been that person for me. From the early stages of my food truck to navigating private chef opportunities, catering tours, and expanding into new ventures, he’s been someone I could call for clear, practical, and honest guidance. When I started exploring government contracts, he walked me through the entire process, how to find them, how to position myself, what documents I needed, and what steps to take. That support helped me move with a lot more confidence and direction. He also helped me strengthen my marketing approach, refine my branding, and think more strategically about how to present my work in competitive environments. What I appreciate most is that David doesn’t try to run your business for you. He listens, gives insight, helps you think through your next move, and makes sure you’re operating from a place of clarity. Whether I’m leveling up a new idea, adjusting my business model, or preparing for a major culinary event, he’s been someone I can count on to help me make smarter decisions. If you’re an entrepreneur or creative who needs guidance that’s strategic, grounded, and personalized, you’ll find real value in working with him.