Training for BMO Begins

So with about 3 months to go, I have decided to start training for the BMO half - should be interesting.... I got injured last April and took way too much time off to recover and lost a lot of my fitness.  Thats what I get for choosing a trip to Australia instead of intense physio!  Ideally I should have done both!  But no sense ruminating about the past.  Point is, I am scared for this half.  It feels like I am starting all over again - but maybe thats not a bad thing?   In yoga, they always talk about the importance of a Beginner Mind, so that you are always in the moment, learning again and being aware of anything you may have missed the first time.  So maybe this is my chance to start again, learn something new as I begin again.