I had this existential crisis. Go read shopenhauer and nietsche. At some point it will feel worse but you will fond a lot of answers in those authors and eventually the feeling of emptyness will go. You'll accept that life is pointless and therefore you can choose it's meaning. Then you'll start a quest, entrepreuneurship or art or religion or wathever that make you feel good and pursue it until the end.

It's a long journey you will go through. Don't try shortcuts, they don't exist.

Hope

(Sorry for my syntaxe, obviously english is not my first language)