@overlordarhas: exactly. Knowing this, you should be able to see that in sacrificing (what you know you would before hand) you made the step in a right direction. And it should be only the first of many to come since you don't stop there but keep doing so until you die, that is what it means to be what you want to be.
Does not work that way, in making a decision, there are too many variable to consider. You may overlook an important factor leading to a faulty one. Once you make the faulty decision, you forgo of the correct one, worse if it is the type that is irreversible.
I can relate, made a few of them myself :(