Quantitative changes can actually cause qualitative changes.

http://blog.csdn.net/begginghard/article/details/7520828

Let's take a look at 3 questions first.
1. "If one thing has a success rate of 1%, what is the probability of having at least 1 times repeated 100 times?" "(D)
A. 10% B.  23% C.  38% D. 63%
2. "If one thing has a success rate of 1%, what is the probability of having at least 1 times repeated 200 times?" "(D)
A. 38% B.  56% C.  63% D. 87%
3. "If one thing has a success rate of 1%, what is the probability of having at least 1 times repeated 400 times?" "(D)
A.%63 B.  %86 C.  93% D. 98%

The correct answer to question 1th is 63%,
Calculation method: Success rate of 1%, failure rate is 99%, repeated attempts 100 times, failure rate of 99% 100 is approximately equal to 37% failure rate, then the success rate is 63%. That is, if you repeatedly do 100 times, your success rate actually from 1% to 63%, quantitative changes caused by qualitative change Ah, at this time you are not a little surprised? is not annoyed once because of a two times failure and not to insist on it.

The 2nd question--The correct answer is actually 87%.
Calculation method: 100 times the success rate is 63%, the failure rate is 37%. This time we repeated 200 times, equivalent to two times 100 times, so 1-37%*37%=87%. That is, if you do 200 times over and over again, your success rate can reach 86%, which is quite high. What is your mood at this time?

The 3rd question--The correct answer is actually 98%.
Calculation method: 200 times the success rate is 86%, the failure rate is 14%. This time we repeated 400 times, equivalent to two times 200 times, so 1-14%*14%=98%. That is, if you do 400 times over and over again, your success rate will reach 98%, almost 100%, which is incredible. Now you want to understand what. Quantitative change is not really the qualitative changes.

I believe at this point you know how to convert an event with a success rate of 1% to an event with a success rate of almost 100%.
The answer is to repeat 400 times for this event with a success rate of 1%.

Some people will ask, if can not persist to 400 times. Hehe, that I also have no way, because I also not often can do. I can only say that we have to fight 200 times.

If you still ask, if I insist on less than 200 times. Hehe, that I also have no way, because I know to do these really difficult. Then I can only tell you, then fight to insist on 100 times.

If you still ask, if I insist on less than 100 times. Oh, that I have no way, because I think to do 100 times also need to waste some time and strength, so it is impossible to reap. Then I will tell you that if you stick to 1 more times, you will have a more chance of success.

Finally, want to share one thing with you, is that if you are a person who can not persist in the end, often give up, then you go to climb a mountain, to climb a about 3 hours to climb to the top of the hill. When you climb to the top of the mountain, rest for a moment, you start down the mountain, about 10 minutes down the hill, on the way, you observe, how many tourists are in this only 10 minutes to stop, not continue, give up. At this point you continue down the hill for 20 minutes, and you can observe how many tourists stop here for less than 30 minutes.

When you return to your study, work and life, encountered any unfortunate things, encountered difficulties can not go forward, tired do not want to continue, you think of mountain climbing so realistic things, but also you have seen things. Then we will be a little more self-confidence, a little more strength, a little more insist on it.