"There will come a moment where I have to be honest with myself -- like now," Van Persie told NOS.
"Today with the final, it turned out to be great for everyone, myself included, and I am very happy with that.
"But people don't see the other side, which is that for the last three weeks, I have been going to bed at 10 p.m. every evening and that I eat the right things at the right time.
"There is a lot that comes with being able to deliver today and sometimes that is a struggle. Sometimes the recovery takes a little longer than I want."