Jet lag is never as bad going west - and when it's a daylight flight, it's easier again, because soon after you get home, it will be bedtime anyway.
By all means, have a snooze during the flight if you wish, but I wouldn't set out to have a full-on all-flight sleep. You'll be able to have a full night's sleep when you get home, and that really is the best way to overcome the jet-lag.
When I have west-bound daytime flights, I look forward to watching lots of movies. If I'm tired, I might have a snooze, but usually I don't.