From my point of view, the most crucial trait of a person is his diligence

In your opinion . What is the most important characteristic (for example . Honesty . Intelligence . A sense of humor ) that a person can have to be successful in life ? Use specific reasons and examples from your experience to explain your answer . When you write your answer . You are not limited to the examples listed in the prompt

There are many characteristics that person needs to have to be successful . But I want to speak about the most important characteristic from my point of view . It is hardworking . The reasons of my opinion are discussed in the following examples.

First of all . Without any efforts nobody cannot be successful . Diligence is the basic characteristic , that everyone needs to have . You can be a strong , intelligent or honest person , but having only these qualities you will not be able to make a successful life . For example . I have known many people who are very successful . As they say , the pledge of their successful life is diligence . None of them does not spend his/her time just telling some jokes or saying the truth .

Secondly . If someone is going to work somewhere , he/she has to complete the internship before he/she will start working . In this period person has a chance to show his /her ability to work well . If you do not hard work, many hirers do not need your honesty or a sense of humor . Demonstrating his/her hard work , it will bring to person success in his/her area of work .

Thirdly . Despite of your other characteristics you can be successful in both professional sphere , and in your personal life . For example , my grandmother and grandfather are very hardworking persons . They built not only their careers , but also their love. They overcome every difficulties in their life because they are hardworking .

To sum up , of course intelligence, honesty and the sense of humor are really essential features for a person. . But I strongly believe that the most important quality of being successful , it is diligence.

needs to have in order to be successful

It is hardworking - It's probably better to either make the sentence longer or to combine it with another one.

First of all . Without any efforts ... - there is a comma after "First of all"

Diligence is the basic characteristic , that everyone needs to have - (WHY?)

makehave a successful life.

For example . I have known ... (Where is the example?) - I know many people, who are very successful - Choose the right tense, you can't change the verbe tense in between the sentence.

None of them does not spend ...
None of them have ever spent his time in telling some jokes or (logically does't make sense to me) speaking his mind?

Hello Fenya.
To make good introduction paragraph you can use this pattern.

1. Background Information.
You already mention it in your first sentence. Unfortunately, your explanation is extremely unclear. It is good if you can connect it with today's condition, give the real condition in the world, or you can emphasize it with start your explanation with fact or some researcher's research.

2. Thesis Statement
In your second and third question you already mention your thesis statement. However, your sentence is too short, especially in third sentence. To write the best thesis statement, you must emphasizes and give the reason why you decide to select "hardworking" as the most important characteristic. You can add comparison with others, or give positive aspects with this kind of work.

3. Reasons. You must write the general reasons or just short explanation for your statement. The good essay is when the reader already know what is your aim in your essay just read in the first paragraph. So, it is good for you to mention minimally about the outline of your explanation in the next following paragraph.

Break a leg !