I do believe thoughts create your reality. I've seen so much evidence for it. But is there is a catch too it? I would definitely say yes!
I'm convinced negative spirits try to attack manifest ion/attraction work. The more conscious you are that your thoughts are creating the more it seems like they disrupt and or block you. Sometimes they simple create a disruption. Other times they completely block it! I've noticed it's often the subject matter that determines how aggressive these spirits are.
An example. I did a lean sutra. Create the feel of my body being really really lean. I gained weight from doing this!!! I stopped. Maybe if I stayed steady it would eventually work? I dunno.
I get better results from just doing a health sutra.....this is something you are less likely to be attacked by these spirits over.
Another example would be hiking. I often do sutras for interest perception and feelings while hiking. They work! This subject isn't blocked but it is disrupted! I notice more things tend to go wrong with my mood. Or I get distracted. It's hard to describe. But I've stopped do sutras for hiking for a while.
It's crazy. It's like these negative spirits are very intelligent. They are trained to attack certain subjects.
Some subjects have no problems at all.
Another note is that you can feel the attack when it is happening. They attack your belief system. One minute something is possible. The next minute you feel negative energy and the same thing is impossible!