If you have a physical disability or you know someone who does, you know that it can be a challenge to do things that would be easy if you were not disabled. Even if you were not born with a disability and didn't get one as a result of an accident or illness, age alone can make you somewhat disabled, or at least disadvantaged. Your eyesight gets worse, your hearing gets worse, your joints ache, your muscles get weaker, etc. This makes it more difficult for you to do things physically. There are also disabilities that can make it harder for you to think sensibly. Some of those disabilities also can come with age. 
    Disabilities can also affect our ability to develop spiritually. And the disabilities here can be on even more levels. Physical and mental disabilities can limit our ability to do what is necessary to become enlightened, but so can disabilities on the psychic and spiritual levels. But just as people are able to overcome many disabilities that limit physical activities, so can most disabilities that limit spiritual development be overcome.     
    A blind person can still sense where the sun is and can still allow sunlight in to energize his pineal gland even if he is blind. A person with paralyzed legs may not be able to walk in a park, but he can sit in a garden, listen to the birds chirping, watch the sunrise, and let the spiritual energy fill him. And a deaf person can be lifted by spiritual music even if she can't here it because she can still feel and respond to the vibrations produced by that music.  And age is usually not a disability at all when it comes to spiritual growth.  In fact, older people are less likely to be distracted by materialism that prevents spiritual enlightenment.