When you do charity, when you help someone who is really in need, then that soul, on a physical level, feels a sigh of relief, and the sigh of relief from that soul brings positive vibrations towards you.
These good deeds that you do bring you merit, which helps you go deep inside. You should have certain merit in order to go into meditation also – not everybody can do it.
When you do some charity and good work, then so many souls, so many people, feel happy.
Their happiness comes to you as a blessing and that blessing helps you go deep in meditation
Gurudev Sri Sri Ravi Shankar