Basically having a mindset like that is a good thing, all great things come from imagination and positive things, but it will remain an imagination if the person is not willing to try, because success belongs to those who dare to try.
The hardest thing is to make it happen, it takes good planning to make it go according to what we want, a positive mindset and great intentions are not enough, everything has a risk, but if it really materializes, you are extraordinary

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And that's where many are stagnant. They are not willing to take risk because they're too afraid in doing so and so, not all of the people out there are willing to change their beliefs and take risk. They want to stay wherever they are comfortable because there is no need to worry of anything anymore. If I am in that shoe, that fits me in and I wouldn't careless of what people are doing trying to make a better version of themselves because I am already content with my life. So, those that becomes successful, they took a rough road and not all of their successes comes easy.
Fear is caused by doubt, doubt that we will fail, doubt that we will lose money, doubt that what we do will be in vain. Fear is a normal thing in life, every one of us living must feel it, but we can turn that fear into power to fight against impossibility. The first thing to do is to try, but it must be accompanied by knowledge, consistency, working hard, always learning. You will gain experience over time and one day you will realize that you are in the position you dreamed of, but it will never be realized if you don't want to try.