The real spiritual progress of the aspirant is measured by the extent to which he achieves inner tranquility.
SivanandaNever worry. Be ever cheerful. Always laugh and smile. You can use the following powerful autosuggestion: "Mr. Worry, goodbye to you. I am a different person now. I am made of sterner stuff." Worry will now be afraid to show his face to you. You can then remove the worries of many of your friends.
SivanandaTo achieve that state of lasting happiness and absolute peace, we must first know how to calm the mind, to concentrate and go beyond the mind. By turning the mind's concentration inward, upon the self, we can deepen that experience of perfect concentration. This is the state of Meditation.
Sivananda