You can play the Yoga Vasistha CDs and listen to it, or take the book and read it. You will understand the nature of consciousness; who you are, what you are.
This feeling that everything is meaningless, there is no point, why are we here, why this universe; these questions indicate a very mature intellect. This is the right time to go deep into knowledge.
Vedic wisdom will also help you.
It is very fortunate; you should feel very happy that you got this question. Many people don’t feel this for a very long time. So when you feel it, you should think, ‘Oh I am so fortunate!’