Sometimes, we all ponder over the bigger questions of life. What is real? What's the meaning of life? Who am I supposed to be? People think these are psychological questions, but they are actually philosophical. Through the proper use of critical thinking and problem solving, it's easy to answer the bigger questions in life.
When first trying to dissect this question, there are some terms that need to be defined and understood. Metaphysics is the study of reality in philosophy, focusing on questions about life, souls, and the problem of evil. There are ideas like monism (we are only physical or mental beings) and dualism (we are both physically and mentally conscious of ourselves) that individuals choose to believe in when it comes to metaphysics. There is spiritual monism, meaning that people believe that the spirit and soul are the only properties that matter to an individual. An example of this be like Buddhism or Hinduism, which focus a lot on meditation and one's inner peace. Then there is dualism, where individuals believe in materialism and think that there are external and internal forces all around us.
Another factor that gets brought up is free will and whether or not humans possess it. The argument that is currently present is that humans do have the power to be free and are autonomous, or that we have no control over our decisions and the paths we go down. Those who argue that we don't have free will normally support predestination, meaning that God has already chosen who and who won't gain salvation. Then there are those who will defend the idea of compatibilism, meaning that humans can still make their own choices without God losing His omniscience as a Creator.
This relates to the problem of evil and how an omnibenevolent God would allow suffering into his world. This connects back to the ontological argument and how "being" is just as important as "knowing". Knowledge and epistemology is a completely different branch of philosophy. But in order to understand metaphysics and the meaning of life, it is important to have basic foundations that are objective to rely on when it comes to what is true and justified.
So in the end, what really is the meaning of life? In a theistic point of view, one would argue that man's chief goal is to glorify God and enjoy him forever. Through their spirituality and faith, they dedicate their lives to that purpose and prosper off of it. For atheists and those who do not have a religious worldview, they would argue in a more hedonistic point of view and claim that life is all about pleasure and gaining as much of it as possible.