Most of the things in this world are two faced.

Covetousness is a very bad thing but you need to covet some good things before you can improve at that thing.
And, you have to create your own world but in this planet where we live, is there anything new? NO. the things we do here is upgrading and presenting it in a better way. Someone processed his own Gaari and packaged it into a bag; then you as an entrepreneur, you gather Gaari and sugar and groundnut and you packaged them into just one nylon, you packaged them and sell. You didn't create something new, it's just an alternative but at this duplication, it is very unique and new. That is, you coveted that thing and you made it your own in a different way. It also means that you acted another person's drama to get the act that suites you the best.
You see, even the negative things in this world has something positive bottled in them. Just like you'll write that "live your life for yourself to satisfy yourself" and at some instances, you know that you have to live for others, you don't have to be selfish so you have to live for others. Just like it is in war, a soldier has to cover another soldier so as to kill an enemy, so that that enemy will not kill you two instead; also in love, you have to learn to live not for yourself alone but with the consideration of everyone you love. So your one and only single and sweet life is not always yours; you're living for others even when you want to live for yourself.
Also, when it comes to being realistic, we paint objectives so beautiful and tag them our target. You can't reach it in a day but then, on one hand, it looks like you're a fine joker, an illusionist but then on the otherhand, it's like you're a fantastic dreamer who is really aiming at winning and winning over and over again.
Just as it is too, in the definition of things. You can give me the best definition of love to the best of your understanding but when I begin to compare your theory with my experience, I may tell you that your definition is incorrect (even if it is) simply because it didn't meet/make reference to the issues of love pertaining to me.

You see, anything that you have convinced yourself to be true is the only true thing in this world. Nothing else.