Everyone has different strategies for managing flights. Personally I sleep when I'm tired, eat when I'm hungry.
Trying to force your body clock onto the arrival time doesn't work for everyone and you could find yourself wide awake when you're 'supposed' to be asleep, and then overtired when you're supposed to be awake. Doesn't end up well.
If I arrive at my destination early in the day and need a nap I take one. But if arriving afternoon, early evening I try and stay awake until the correct bed time.