Anyone in a state of seeking can never be happy. Only those who are constantly finding are fulfilled. And finding is not something that happens to us - it is something we do.
The radical hostility, the deadly hostility against sensuality, is always a symptom to reflect on: it entitles us to suppositions concerning the total state of one who is excessive in this manner.
If you can cultivate wholesome mental states prior to sleep and allow them to continue right into sleep without getting distracted, then sleep itself becomes wholesome.