To counteract with the feeling of fear, you can get support from people who believe and is confident enough that you can make it. Do not expect support from people closest to you because they are the one most probably affected by your decision, so they may find it hard to offer support at first. As long as you can get them agree for you to proceed with your plans, you may use it as a reason to proceed and support can be achieve later on.
Setting a goal may also help you to alleviate the fear. Arrange your financing according to date and say it out loud. This will help you to develop confidence and will help you become better as you go along the way.