I also believe in the below :

From :
http://www.jamesaltucher.com/

WHEN IS AN IDEA NO GOOD

Jon Velez ‏ @jmvelez08 what makes u lose interest in an idea? Are u looking for something that is built and running, or do u consider working w. ideas

ANSWER:

Believe it or not, most things in life should be very very easy. The reason why it seems we must encounter such great difficulties until we find success is because most people carry with them the mistaken belief that we need to “pay our dues” – that things should be hard and it’s through this persistent fighting in the trenches that you come out the other side the victor.(probably not a good idea)

But the reality is, the reason persistence works is because it takes time to realize that things that work out well are actually the things/ideas/companies/endeavors that are easy.

For instance, if a company is great then it’s easy to raise money, make money, and then sell your company. But if an idea or company is not so great, then it’s a lot of work to set up, its very hard to raise money, and its very hard or impossible to get customers and sell the company. And might take years. Then you shut it down and start the next company and it feels like persistence.


I lose interest in an idea then when what I call the “conspiracy number” goes too high. If too many things have to conspire together for the idea to work for me then it’s no good. For instance, if a product has to be built, customers have to be found, money has to be raised, and (as is the case with most companies) the product has to be re-worked, then it has a conspiracy number of 4. For me, 2 is high enough. 3 or higher becomes stress. Stress increases the risk of heart disease, strokes, Alzheimers, and cancer.


HOW DO YOU ACHIEVE CLARITY OF THOUGHT

Richard Ball ‏ @rballe33 How does one achieve pure clarity of thought?

ANSWER: You can’t achieve pure clarity of thought. Achieving something makes me think of a race.
We already have clarity of thought at the beginning of the race. But by the end, we’re so tired that we lose all the things that prevented us from realizing it in the beginning.



So intstead of thinking about achieving, think about erasing. How do we erase the clutter, the sticky brown residue that’s built up over the years in the crevices and myriad little etchings in our mind that prevented us from just reveling in our original clarity of thought.

Every day pick one thing to erase. I have a grudge against my mother. I will erase that today. How can I erase it if it’s built up over memories and years. Just everytime I think of the grudge I will think to myself “this is not useful. It will prevent me from being happy.” I want to be happy. There’s no deep analysis needed. I’m not burying the grudge. I’m just simply not wasting time thinking about it.

I regret losing a lot of money 10 years ago. This is also not a useful thought. It’s the past. It’s done. Not useful. Today I will do what I can to move forward, during the spare moments when I’m not driving my kids around on their various activities. They have a much tighter daily schedule than I do.

I want to write five novels and be a best selling author. I want all my investments to work out. I want ,maybe to do another startup or two and make a lot more money. Ok, that’s fine. But anxiety about it won’t get me there. I can maybe take one step forward on one goal today. That’s what I will do. I don’t need to do the rest. I won’t die today if I don’t do the rest. So I’ll erase goals that are unobtainable today.

Just keep erasing everything that is not useful. What happens when you are done erasing.

You have a blank piece of paper. Enjoy doodling on it.