thank you everyone!

As far as sentence structure goes, it's correct.

It looks fine to me. Try using capital letters and full stops for sentences, though.

Yes ,it doesn't make much sense. Repeating 'experience' as a verb and a noun sounds redundant and doesn't give the sentence much meaning,unless you add an adjective before the word 'experience' to describe ,what kind of experience it is. Still the repetition doesn't sound good. You could use another word for the verb experience such as 'go through': "What you went through is a ......experience." ( remarkable for example or any other suitable adjective)."