If you want to achieve anything then you need to know what anything looks like, once you know that you can work out what you need to do, what you need to learn to become who you need to be to deliver it.
You are what you think you are and you will become what you think you are becoming, you will achieve what you think about most and if you are thinking about your fears most of the time guess what you are going to wake up one day and find has happened
Henry Ford said that whether you think you can or you think you cant your probably right, and if you think you cant you will fine reasons why it wont and gravitate towards those, if you think you can you will see opportunities and move in that direction.