Yes anything is possible.
Question is -
Do you want it enough to see it through the entire creation process?
Are you able to master the process of letting go, and manifesting simultaneously?
For things that come easily to us, the above does not matter. We are already masters at that!
But every person has those special life areas that take more time to master. And being incarnated souls, all of us try to master this or that.
If you let go of something completely, it loses all energy and deflates. Example, if you love someone, and you completely cut off with him/her, then that relationship deflates like a lifeless balloon.
At the same time, if you catch onto someone, and cannot let go, then too you will run the danger of crushing and not allowing air in. Holding on tightly comes from a fear of losing, and letting go completely shows disinterest in the subject matter, which means that the Universe thinks that you don't want it.
However with a delicate combination of letting go, and manifesting simultaneously, you can just about make anything happen.
The amount of energy that you put into something should be proportionate to the results that the project can give. If you put in too much energy into a particular situation, then if that situation does not give you a proper return, you will be disappointed.
So evaluating the amount of time and energy given is another factor that goes towards making things possible. The logic behind this is, if things don't happen quickly enough, you will not start feeling resentment and resistance which then makes it even more difficult for the desired object or person to come to you.
So the three points till now are-
1. Learning how much to hold on
2. Learning when to let go
3. Giving proportionate energy to the manifestation
The forth point is constantly re-evaluating your choices. As you grow and evolve, your choices change. Make adjustment to your choices to accomodate the new you! And you will see that it is much easier to fulfil your higher choices, than get stuck in your lower ones. Higher choices have much higher vibrations and we all know that the key to attract what you want is to have great vibes! Lower choices actually make you doubt your creations and whether or not you want it. And doubt is not a good ingredient to great manifestion!
The fifth point is accepting where you are, and where things are in the manifestation process, and being happy. Your happiness is what is what fuels your creations.
Remember anything is possible!