"Sincerely chanting Hare Krishna and hearing/reading about Krishna is the foundation which gives us the aspiration to accomplish more with our lives than simply meeting our physical and emotional needs. Although having these needs fulfilled can help one to acheive a sense of stability, possessing them - even throughout all of one's life - is not the criteria for a successful life. Real success is the acheivement of pure and steady Krishna conciousness, which you can see is a lifetime pursuit.
Collected Letters to Friends and Disciples Vol 5, Pg 22, 4th paragraph.