If you can see the path or route that you would like to travel with the SFI program, before you go down that road, or track you envision, and it gives you that I can do this feeling, and I won't give up, til I do. Your on the right track.
There is nothing harder than working with something you do not feel inspired to succeed on, than the wrong track.
There is nothing that can stop you when your on the right track.