The man of discipline has joy,delight, and light within;becoming the infinite spirit,he finds the pure calm of infinity.
Here Lord Krishna shows that a person with discipline is always happy, has a good life, and always be satisfied with his/her life also I think that person will be positive energy for others.
Sacrifice in knowledge is betterthan sacrifice with material objects;the totality of all actionculminates in knowledge, Arjuna,
What does Krishna mean by scarifies? is it something like sharing knowledge?
success comes quickly from action
It describes that just talking about something is not enough, we have to show it by action then by the time passed action will change to success.