Please be advised in the first place, that it is widely known that we do not manifest from the brain, from the mind alone. Since the brain naturally has a positive and a negative side and that also is nature of thoughts, if our manifestation is successful (and I wish for everyone that it will be) that we are automatically attracting the equal negative side with it.
Things happen faster when you let go and be patient. If you keep worrying about it, you are thinking about lack. if you let go of it, there's no resistance. What's there to block you? I like the example of gravity that Supernova gave us about the plane notion. we can still fly planes despite gravity. Otherwise without gravity we would keep ascending into the depths of space! The same way, you can attract nothing despite LoA actually attracting it for you.. Adding to this, there is still the force of gravity acting on the plane but the net resultant force is upwards. The same way, you think the law of attraction won't work for you but in fact it's the law of attraction giving you the stuff that is needed in order to change your mindset that it will not work for you and hence go to the default issue that many people have. You have the thought that it doesn't work for you. However, if you change that mindsetby looking for proof that it does, you will see that the law of attraction helps you MUCH MUCH MORE.
When you put aside your doubts, you can begin to imagine in both mind and body what it will feel like to have your Wishes Fulfilled. Think about what you plan to manifest — then use your imagination to feel what that feels like in your body. Does it feel natural to you? Does it really feel like this is the “you” that you are deciding to be? By staying only with what your senses tell you is your reality, you place a barrier to letting your imagination create all that you wish for. Your imagination is unlimited.