I had lost my code for the mini-vault I hired in the bank. I did not write the code on paper, since I thought that it was impossible to forget a 3 letter code.
Well, to my utter surprise, I did forget that stupid code.
I started to use all sorts of techniques to ask my subconscience for the code : asking questions before going to sleep, visualising, free writing, meditation ...
I received a lot of codes, but all were wrong.
After three months of trying, I really had that vault to get open soon, so I asked someone from the bank what actions I had to take to let that vault get opened. It would cost me a lot of money, but I seemed to have no choice.
For the last time, I did a brainstorming session and I tried the list of about 20 different codes that came out of that session. To no avail.
Still standing before the vault and exactly on the moment I really gave up, the moment I said to myself, OK, I did my best, I let it go and now I go to one of the representatives of the bank to start the opening procedure, on that particular moment a new code popped into my head.
I was extremely sure it was the wrong code, but I thought I had nothing to loose, so I did try it out.
To my enormous surprise, after putting that code on the wheels, I could turn the key and open the door !!!

So, the solution came just on the moment I let the problem go.

I don't know this is something you can use to solve your problem, but you never know.

Patrick