There is only one point you can start from, and that is right where you are right now. You cannot start from your past, and you should not wait to get to the future before you start. Only one option left, start now, start where you are.
All you have is now
The past is gone, and the future is not promised. Where you are is where you are, and you can start or continue to take steps towards where you want to be. All you have is this moment, right now, right here. This day is the first day of the rest of your life. This moment is the first moment of the rest of your life. What decisions can you make today, right now, that will impact the rest of your life positively.