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.
RamakrishnaA man is truly free, even here in this embodied state, if he knows that God is the true agent and he by himself is powerless to do anything.
RamakrishnaThe breeze of grace is always blowing on you. You have to open the sails and your boat will move forward.
Ramakrishna