Group fitness classes, meditation, flow arts, and lectures by philosopher Alan Watts have taught me that not thinking is one of the best things we can do for ourselves. Just because we can think doesn't mean we have to.
Benefits of not thinking
Grass doesn't have to think about growing. It just grows. The same is true of people. We don't have to beat our hearts or remember to breathe while we sleep. Our bodies function just fine without thought.
When you stop thinking, you release awareness of physical reality. This is a good thing, because physical reality is just a temporary indicator of your vibration (the average of your thoughts). It's old news and really doesn't require our attention.
Without the distractions of physical reality, you are free to connect to the flow of well being, to god, to source energy, to love, to the magick of the universe. This is because thoughts are the only thing that can block your connection to the flow. Without thought, you are the flow of well being.
Without thought, you are able to know your true self - the perfect, infinite, ecstatic being that is within us all.
When you should think
The only time thinking is useful is when it feels good and fun. Thinking is creating whether you are thinking positive or negative thoughts, so why would you want to be creating more negativity in your life?
Thinking is most fun for me when I write my gathering momentum posts each morning. The posts are my best creative work, because they direct my thoughts towards all the good things in my life and all the things I want. When I write a gathering momentum post, I am creating the reality I desire.
After I write that post, I give myself permission to stop thinking for the rest of the day. Writing makes me feel great, so I know I will only attract good experiences. I don't have to worry, plan, or scheme. I just flow. And everything I want falls into place.