I was speaking to a convention of Toastmasters and mentioned the nervousness most of us feel as we begin our speaking careers.
It reminded me of Solomon Asch's experiment in the 1950s which showed how much we need other people's approval.
After you have imagined what success will look like, consider what you don’t like about the way things are. You need to create a contrast between the way things are now and how life will be once you have achieved the goal. Write them down – both of them. Review and revise them regularly.