Religion was once answer to that question: What is life meaning in situations where I'm failure? Answer was: Meaning is obedience to God commands that are universally good since they are from God. Today unless you have family and satisfying job, I would say hope that you can find in fact that you don't know everything, so although you don't know meaning of your life perhaps there is meaning in all this. In the end we are all product of Big Bang so everything including you is equally meaningful or meaningless.