I used to be superstitious many times when gambling and had even a lucky charm that was a ring I though brought be luck. Until I realized that it was all in my mind when I won thinking I had the ring and then realized I didn't. So really it is all a state of mind, strategy and concentration.
This is about with your belief with those superstitions. If you think they are effective enough, it will become effective and you said it right that it's about the state of your mind and concentration. And if you are concentrated that it will be effective then so be it and you will bear it to your mind that superstitions are real and amazing. But don't bother others that will make fun of you about these type of beliefs.