Oftentimes in the realm of the "Law of Attraction" and metaphysical studies, there is an inordinant amount of emphasis placed on "positive thinking/visualization".
In my own life and process, positive thinking and visualization alone has taken me only so far, most of the time showing up in the form of a "sort of cool coincidence which seems significant but doesn't make or break my desire".
The meaningful synchronicities that lead to an actual breakthough comes from becoming very clear about what it is that I want, and then chipping away at the blocks which exist to having it.
There are times when your desire and intention is strong enough that you have what Abraham Hicks calls, "A Quantum Leap".  But when they happen that way, there is no space for it and it either causes more stress than relief or you lose it because you didn't gain the skills/awareness to keep it.
This is not to say that I never fall into the positive thinking trap. 
My personality certainly lends itself to the Pollyanna-ish outlook, which on the whole is not necessarily detrimental, but requires a fair amount of reality checks to keep it grounded in reality. 
I have an impending career shift in the coming months.  And I am working on visualizing what it is that this new career path will look like.  I am putting together the kind of hours, rates, and lifestyle that I would like to have.
What is coming up these days is the reality of what having that life is really going to be like, and I am getting tastes of the kinds of clients and situations that may arise.  While finishing a session today, I was startles to all of a sudden realize that I was feeling the same feeling I have at my current job which I am planning on leaving---mostly because of this feeling.  I felt on a deeper level, that the job is not the focus here but rather this recurring issue around worth and effectiveness.   What I felt was my sense of worth and giving away of my time that I have been used to doing for so long, and it actually made me angry. 
Anger is not a feeling I feel often, so I am very uncomfortable when I feel it, and so I found myself immediately going into rationalization and finding fault in the way I was doing something.  Much like the new-age dogma of denying anger and finding the silver lining and changing yourself more so that this doesn't bother you.  But this anger was different.  It was not directed at the client, but rather at the situation and in a protective way over myself.  It's like I was getting angry the way a parent would get angry if their child were being harmed somehow.
It was an anger full of energy and strength, and "enough is enough". 
This anger, when harnessed, can aid so much in transformation and I feel that deeply.  So I am seeing in what way I can sit with my anger and use it as energy to propel me forward. 
To access this anger, to sublimate it, to make it a force to work and gain finesse with, or for that matter, with any emotion that is not deemed "Positive", is in my mind, one of the essential parts of coming into more wholeness and alignment to which is essential to be a balanced person in the life that you are creating.
What you deny finds a way to come out against yourself and/or other people anyway. 
In what way do you find yourself blinded by anger/sadness/anxiety/etc?