It becomes easier later in life or following debilitating illness or injury. I think part of the problem is that we are constantly surrounded by people who want or even need our time and labor, and as a result we are raised to devalue private labor. Most people spend most of their time either in labor for another, or in recreation to dull the pain and stress of the former. Prayer and meditation are work, not recreation, but work devoted to the self or to the gods, and the capitalist market has no use for either of those things, at least not from the body of the young adult. So we are encouraged to expend all of our "labor" elsewhere, obliging one to sacrifice "recreation" time if one wants to work on spiritual development. A fair enough bargain once embarked on and well worth it, but hard to initiate when one is exhausted and anxious from the day.