Delve into advanced concepts of non-perturbative quantum field theory in this comprehensive lecture, part of a series on methods and techniques in the field. Explore cutting-edge approaches and analytical tools used to tackle complex problems in quantum field theory that go beyond traditional perturbative methods. Gain insights into the latest developments and applications of non-perturbative techniques, enhancing your understanding of fundamental particle physics and quantum mechanics. Suitable for graduate students and researchers in theoretical physics, this lecture offers a deep dive into the intricacies of non-perturbative QFT, providing valuable knowledge for those pursuing advanced studies in the field.