That's such an early age to feel that way. Glad you are feeling it.
I got there too in my 30's. I feel that's early for most in this world we live in.
However, that is slowly changing, soon it will crumble and all we will have left is search for meaning :)
Two things in response. This was my way of searching for meaning.
Also, a few lines, from a song: (timestamped link to the lyrics)
From the song "Sensorium", by Epica, Album: The Phantom Agony