Yes, you need to show some action when you desire something. How will you show the universe that you are working towards what you want when you are not doing anything? Moving towards what you desire will allow the manifestation to happen sooner than what you have expected. You need to remember that the law of attraction is real.
Even if people would tell you to become realistic, you need to remember that your mind is a very powerful thing — the more that it thinks about the positive things, the more that you will attract positive things. You need to move so that what you asked for will be given to you. If you do not take action, the manifestation may become slower.