As you all know, the achievement of a trained athlete far exceeds that of an untrained person. Through training, however, the untrained can achieve the same result. Having bodhicitta or not is a matter of constant practice, not an unchangeable condition. If we do not start practicing now to generate bodhicitta, we will forever remain selfish and never become Mahayana practitioners. However, as we continue practicing for a period of time, say, three months, half a year, or a year, bodhicitta will certainly be developed to some extent.

- Quote from The Right View, "The Three Supreme Methods"