Make your meditation a continuous state of mind. A great worship is going on all the time, so nothing should be neglected or excluded from your constant meditative awareness.
The sun can give heat and light to the whole world, but he cannot do so when the clouds shut out his rays. Similarly as long as egotism veils the heart, God cannot shine upon it.
You speak of doing good to the world. Is the world such a small thing? And who are you, pray, to do good to the world? First realise God, see Him by means of spiritual discipline. If He imparts power you can do good to others; otherwise not.
There are three kinds of love;
unselfish, mutual, and selfish.
The unselfish love is of the highest kind;
The lover only minds the welfare of the beloved and does not care for his own sufferings.
In mutual love the lover not only wants the happiness of his beloved;
but has an eye towards his own happiness also. It is middling.
The selfish love is the lowest. It only looks towards its own happiness,
no matter whether the beloved suffers weal or woe.
Sunlight is one and the same wherever it falls; but only a bright surface like that of water, or of a mirror reflects it fully. So is the light Divine. It falls equally and impartially on all hearts, but the pure and pious hearts of holy men receive and reflect that light well.
Take the case of the infinite ocean. There is no limit to its water. Suppose a pot is immersed in it: there is water both inside and outside the pot. The jnani sees that both inside and outside there is nothing but Paramatman. Then what is this pot? It is 'I-consciousness'. Because of the pot the water appears to be divided into two parts; because of the pot you seem to perceive an inside and an outside. One feels that way as long as this pot of 'I' exists. When the 'I' disappears, what is remains. That cannot be described in words.
If you spent one-tenth of the time you devoted to distractions like chasing women or making money to spiritual practice, you would be enlightened in a few years.
As a boy holding to a post or a pillar whirls about it with headlong speed without any fear or falling, so perform your worldly duties, fixing your hold firmly upon God, and you will be free from danger.
If you keep your heart immersed always in the depth of that holy love, your heart is sure to remain ever full to overflowing with the Divine fervour of sacred love.
One man may read the Bhagavata by the light of a lamp, and another may commit a forgery by that very light; but the lamp is unaffected. The sun sheds its light on the wicked as well as on the virtuous.