Do you believe in manifesting?

The other day, I was chatting with a friend and he had asked me if I believed in "the secret." He said "the secret" is the key to making the universegive you what you want by convincing yourself that you will eventually get what you wish for. For example, this friend really needed a new graphics card for his pc, so he kept telling himself he'd somehow get one before the end of the week. A few days later, his friend offered himhis old graphics card for free as he had just made an upgrade of his own. Not quite the graphics card he wanted, but it was still onestep up from the one he had wanted to replace. Do you think this is purely a coincidence or is manifestation a real tool we have as humans?