God Help Me... Hope its not too late...

Had a long talk with a friend of mine,
I think that must have the most fruitful conversation
I've had for a long, long time.
He is someone who is rather perceptive,
And has gone through what I am going through
At this point of time.
Last night,
He taught me many things,
And he did not sided with my ideals,
But rather he told me what I should have done
But did not do.
Basically,
Last night, he made me realise that
All the issues that has happened so far,
Was the result of my own undoings.
I was the cause of the degradation of our relationship,
I had become a totally different person she fell in love with.
Knowing this now,
I know what must be changed,
But the road to recovery is not easy,
Therein lies a colossal obstacle,
That I've never really gotten over.
Also,
Though I'm fired up to change now,
There are 2 other problems now...
1) What happens if the fire in me right blows out?
2) It might be too late. The hurt that I've caused her,
Might be too much for her to bear,
And her heart would probably would have died long ago.

I really do not know the answer to these 2 questions now.
But I do know that if I do not try,
I would lose even more.