Giving attention to what-is only attracts more of what-is. While giving attention to what is wanted attracts change. And so, there is a sort of complacency that comes about, simply because the Laws are not understood.
Most people stop deliberately reaching for expansion because they have not understood the Laws of the Universe, and so, they have been unintentionally offering contradictory thoughts resulting in not getting what they want. When your belief of what you can accomplish contradicts your desire of what you would like to accomplish, even hard work does not yield good results, and over time you just get tired.
Coming into conscious awareness of the Laws of the Universe and then beginning to gently guide your own thoughts to that which you prefer will begin to produce positive results immediately.