You may undermine the power of your own words, but ask yourself this simple question - what will it cost you to always speak positively to yourself? Will it take a penny from your pocket? No, it won't. So why don't you? Perhaps you don't actually believe in yourself?
If you truly believe at the core of your being that you'll become rich, then declaring it aloud won't be a problem to you. The issue arises because deep down within yourself, there's that self doubt, and you're wondering - what if you say it aloud and you don't achieve it? People will laugh at you.
But that's the very problem you must eliminate - self doubt. There should be this confidence in yourself; and your mind telling you that it's all going to be well, and whatever the challenges perhaps you're presently faced with, you'll come out stronger and become rich.
Many great men have used proclamations to make themselves richer. Sometimes, you see the owners of big tech companies, tell the public that they'll produce a more advanced tech within a particular time frame. But at the moment, they've probably not completed the half of it.
But such proclamations, ensure that you stay on top of things, and make sure that you actualize it on or before the date you proclaimed you would. This puts you under a kind of pressure to work harder, so that you'll not get mocked if you fail to achieve it. And eventually, you mostly do; because you've already proclaimed it so.
