I was not familiar with the idea of vision boards, but it sounds like a good idea to me. From a classical Buddhist standpoint, you should try to train yourself not to need that sort of support mechanism, but my own opinion is that if it helps, it's a good thing.

The best resource I've used so far to help with mediation, visualization, and affirmation is John Assaraf's new book “The Complete Vision Board Kit.” I downloaded one of the free chapters here I use mediation every single to relax and prepare my subconscious mind to soak in my vision's of a better lifestyle. However, I feel like I only slip into the “trance” for a brief moment. How do I stay in this moment for longer?

Another method I've been using lately is visualization with vision boards. Have you ever heard of them? They are images pasted on a board that represents your hopes, dreams, and goals. Studying these boards every days plants seeds of these goals within your subconscious mind.

Your subconscious mind is where all of habits are formed. Combine these visualizations with mediation and affirmations, and the seed in your subconscious mind will begin to grow, sprouting a newly developed habit that is oriented towards your desired outcome, or goal.

John Assaraf does a better job of explaining this and showing you how to do it in his new book “The Complete Vision Board Kit.” I downloaded the free chapter here: http://tinyurl.com/56mfen and it was very helpful.