I saw this documentary "Law of Attraction" (not the movie) almost three years ago. It says right attitude of having something already accomplished which is not accomplished yet, will actually help you to reach that destination. Of course it sounds absurd at first. But I believed that positive attitude is thousand times better than a negative one.
Also in a conversation around two and a half years back, one of my friend Anton asked me if at the back of my mind I am still interested in physics or not. I was not doing well in my studies. It made me think that whatever idea you dump on the back of your mind, you consciously may forget it. But it stays there and dictates all your future actions. They can as well be analysed very strongly from that point of view.
Observations show that apparently strong dams built on rivers are required regular maintenance. Though the calculated shock that can absorbed without any damage is more than the actual force the river exerts for a given amount of time. Similarly, it may be inferred shows that if you continuously let something stay at the back of your head, it affects your action in achieving or fulfilling those ideas.
That is why I realised that whatever you want, make sure you want it in the long run. Because if it is not, you might not like it when you get it. But nothing can be done then as everybody would know what you were up to all these times and all the situations created were already very strong to not let go off the thing you wanted all these years due to your actions. So, I think it would be wise to decide beforehand what you really want instead of not liking it that much later. Be careful what you wish for, it might come true.