Start off your day with the assumption of success. Decide on success first. Make it non-negotiable. Then plan backwards.
This is not arrogant. Or mean. Since mindset is everything, your mindset has to always be in a mode of "This is my goal. I will hit it. Now what do I do to take one step forward?". When you live this way then every decision is grounded in what that goal is. You can't wonder if you are going to be great. Assume you are. You can wonder if you are going to get in shape or fall in love or making a million dollars. KNOW IT. Believe it. And then the things around you become insignificant in relation to the path that you are on.
Assume success first. Then create it.