有一篇英语短文，不会写，可否帮个小忙，明天要急用，帮帮忙吧，谢谢了。

Everyone is too nice. We all are obsessed with trying to keep everyone happy, we have forgotten to look after number one. Look at these steps to find out when to say no.
1 Know your limits. If you can't do something quit while you're ahead.
2 If you don't want to/can't do something, don't be nasty!Just tell that person in a nice way that you're really sorry but you're busy that day, and possibly rearrange something else on another date.
3 Know your diary. If you don't you could double book. Make sure that you conveniently have something on that day.
4 Trust your instincts, your body reacts even if you consciously don't fully understand what you are experiencing. If you are feeling anxious in a situation, heart rate increasing, or maybe you just are feeling uneasy it's a good indication that something is wrong. It may time to say NO, find a rock and kick it.
5 Know your expectations. If you are obliged to do something, do it.
6 If what you're doing is dangerous, back out as soon as possible to avoid emotional and physical injuries.
7 I know it always seems hard to say no, as you are afraid of hurting other people's feelings. However, it usually benefits to just summon up the courage and risk upsetting others, things should be fine unless you have a really touchy friend!
8If you have trouble saying "no" start by saying "I'll have to think about that", "I'll have to check my diary" or "I'll get back to you". That way you give yourself time to think. Often people who have difficulty with saying "no" feel pressured into saying "yes". Take the pressure off and you will find it easier to say "no". Never do something because you feel obliged or embarrassed not to. Your judgment may not be serving you well when you are under pressure.

Don’t Hesitate to Say "No"
　　To help those who are in need is always regarded as a traditional Chinese moral. However people have to know well what the need is before the help is offered. When the need is just for some minority’s benefit and against most people’s interests, or when it is immoral or unlawful, people should not hesitate to say No. Otherwise they will put themselves into trouble.
　　Unfortunately, there are so many such examples around us that people end up their leadership in jail or bury their glory in shame simply because they don’t say "No" while they should. Some people are reluctant to say "No" in front of all kinds of briberies as they want to swamp their power for money. They can’t resist the temptations of accumulating wealth in a fast but illegal way. For their own good and their friend’s favor, these people would sacrifice millions of RMB Yuan for an unproportional commission and therefore stake there future on scales of law. Other people don’t say No because of misinterpreted friendship and lack of sense of law. They never hesitate to do whatever their friends ask them to do. They believe they are helping their friends even when they are actually violating the law or local regulations. Such people will also be punished according to the degree of their misbehavior.
　　Therefore, to help is not always doing good. People should learn to say a No when the help might hurt other people’s interests

直接baidu，百度知道啊