This won't be a long dissertation about the Law of Attraction. There are sources galore to read up on it and of course, "The Secret" explains it fully.
Basically, you get back what you expect to get. But, first you have a create a clear vision of what you are seeking. Then, visualizing it with your senses excites your emotions and opens things up for you to be able to attract what you want.
While I have not read much about the role of the Reticular Activating System in attracting things it figures in, of course. The brain wakes up to the possibilities you are seeking as you become aware of what is out there. The term "Universe" is often referred to the source of the good things that become yours. It seems to me to connote space, which opens up a whole new perspective.
The energy you send out comes back in kind. Negative people get back negative stuff; positive people get back the same, even when they face adversities.
I don't believe it is all within our control to attract all good stuff. There are wicked forces in existence that would prohibit that if one takes the scriptures seriously, which I do.
But, we can control our thoughts and dwell on positive and concrete things that are grounded in truth and reliability. Then we can open ourselves up to expansive thinking.
In handwriting, look for openness and balanced loops all areas of the writing. Scrunched, tight, and fully retraced strokes (like closed small e letters) show evidence of restriction of emotions, thinking and reactions, which would make expecting big and new things very hard to do.