Most rivers flow to the ocean. A few that flow into a lake or to a desert and fizzle out, it may take a few more cycles for the water to evaporate and rain in some other place, from where it’ll reach the ocean. So they also end up in the ocean sooner or later.
Spiritual awakening is like that. A regular life span is enough to have an awakening, if one is honest to oneself, sincere, and don’t suppress experiences with shortcuts; if one is open and sensitive to what life is showing us. If we don’t sedate ourselves, the intensity of everyday life should be enough to awaken one from the so called “dream world”.
Here is a Youtube clip of “Adyashanti on the concept of spiritual awakening”