If you are not having fun, then you are missing the point.
Simply play with fewer cards.
Instead of having a deck of 40 cards for the game, go with 30 cards.
This is he best way to shorten the game.
Another option (although less fun) is to hand-pick the cards (assuming that you're running the game, but not actively involved) so that they are easier. The players won't get as much opportunity to get creative in the first round, but it's still a great game.