OK, there are people that actually have a dream of becoming somebody that is so great in life, but their vision is totally different.The way we have visions and dream about our life is different from what each person is.I learned too, You may have a vision to become a president tomorrow. Another person has another vision to become another thing.
Source
There is no end to what our mind can conceive about what we should be when it comes to having dreams and vision about our lives and destiny at the same time.We as human have to jealously guard our dreams and vision away from people who eat it up for the day.I mean there are some people that do everything to kill visions and kill people's ideologies and mindsets.
If you mean these kind of people, they will drain you of every good thing that is inside of you and make sure that you have nothing left. So you have to be sure that you are not meeting anyone like this at any point in time and that you are doing everything possible to make sure that you get your dream and your ambition perfectly well.