To manifest something, you must have both your subjective mind and objective mind working in tandem.
Here is when your initial plans can go all wrong. If you are trying to lose weight and you decide to seek the powers of your subjective mind in order to carry it out. So you repeatedly tell your subjective mind that you are thin.. You try this for one month and to your amazement, you see that after one month, you have put on an extra 5 kg. How can this be and what happened..?
What happened was that you subjective mind worked on the underlying belief, not on the words you were telling it.. This is key..
So even though you were telling yourself that you were thin, you really believed that you were fat..
Therefore all your subjective mind did was act on your underlying belief..
So Key point : Change your words to words that you believe in.. then good things will start to manifest..