Everything in life comes at a price; be it materialistic gains or mental peace, everything demands something in return. No one should ever expect to get anything out of life without putting in something from their own side. Success in general demands you to work day and night, work with nothing else in mind. Success, is like a mistress that needs to be pleased before it accepts to walk along with you. And to keep it that way, you need to show your admiration, adoration and appreciation for her at all times. Falter once, and you lose all that has been gained; it is harder to please an angry woman than to make her fall in love with you for the first time. And the same is true with success.
Readers here might be wondering why I draw this "preposterous" analogy so here is my excuse : "The two characters compared are currently the only things in my mind, making it harder for me to choose the 'mistress' I want to secure first."