This document presents a comprehensive thesis on a Theory of Everything (ToE) which unifies all fundamental forces and particles within a single theoretical framework. Integrating advanced theoretical concepts from quantum field theory, general relativity, supersymmetry, string theory, and cosmology, this thesis outlines a proposed Lagrangian encompassing known interactions and fields. Key components such as dark matter, dark energy, neutrino masses, and matter-antimatter asymmetry are addressed, alongside critical aspects like anomaly cancellation, renormalization, and vacuum stability. Experimental validations and mathematical consistency analyses are discussed to provide a roadmap for achieving a fully complete ToE.