Everyone is thinking if I become greedy, I shall get more. That is not possible. You cannot get a farthing more than what you are destined. But it is ignorance. He's thinking by simply struggling hard I'll get more. The śāstra says, "No, don't do it. So far your material condition is concerned, it is already destined with your body. You have got a certain type of body and according to that body you'll get certain amount of pleasure and pains, that is already destined." This is called adṛṣṭa, daiva. Your main business is if you want to make success, your life, then save time for advancing in Kṛṣṇa consciousness. That is proper utilization of life. That does not depend on destiny. That you can do. That you can do. So far other things are.
Therefore śāstra says tasyaiva hetoḥ prayeteta kovido na labhyate yad bhramatām upary adhaḥ (1.5.18). You have traveled, sometimes up, sometimes down. Up means upper planetary system, down means lower planetary system. Urdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). If you develop sattva-guṇa then you are promoted to the higher planetary system. Madhye tiṣṭhanti rājasāḥ. If you remain in the passion modes of nature then you may remain within this world or few others. And jaghanya-guṇa-vṛtti-sthā adho gacchanti tāmasāḥ. If you habituate jaghanya-guṇa-vṛtti.