It's a question of confidence. The more you are confident, the less "magicky" effects you need to confuse your common sense.

Just "knowing" things works really well.

eg. I was in my room. I saw my door, and I knew (in other words, was completely sure) that it led to an underground passage on mars. Being sure of that, I opened it - mars.

Same with things. If you are completely confident, if you know that if you open a drawer, you'll find what you are looking for - it will almost always work.