Practising Krishna Consciousness
Remembrance of Krishna is not possible for the impure soul who has not practiced Krishna consciousness in devotional service. Therefore, one should practice Krishna consciousness from the very beginning of life.
Great Gain Derived From Chanting
Yoga means to connect ourself again with God, or Krishna. This practice of yoga, always thinking of Krishna, is very easily accomplished by chanting Hare Krishna maha-mantra, if you chant Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare, Hare Rama, Hare Rama, Rama Rama, Hare Hare. Twenty-four hours it can be practiced. There is no expenditure, there is no loss, but the gain is very great.
From a lecture by Srila Prabhupada, Bhagavad-gita 7.1 — Durban, October 9, 1975
Importance of Chanting the Maha Mantra
If one wants to achieve success at the end of his life, the process of remembering Krishna is essential. Therefore one should constantly/incessantly chant the Maha Mantra.
Preaching
The sufferings of humanity are due to forgetfulness of Krishna as the supreme enjoyer, the supreme proprietor and the supreme friend. Therefore, to act to revive this consciousness within the entire human society is the highest welfare work. One cannot be engaged in such first-class welfare work without being liberated.