As touched on earlier, it's not a good idea to send your Queen straight into the action in the opening moves. With the board chocoblock full of enemy pieces, ranks 4-8 are fraught with danger for your lady.
Better to bide your time with the Queen. Wrap her up in cotton wool early on. Your Knights and Bishops will lock horns with their counterparts in the early exchanges. As the smoke clears in the late middlegame, your Rooks and Queen will start to feature more and more in the game.
Of course every game is different and these are just general principles. If it makes sense to bring your Queen into the attack after 8-10 moves because a material gain or chance for a mating attack becomes available then naturally you should go for it. You just have to recognize those occasional circumstances when it makes sense to eschew the normal principles.