There are some factors that effect human decision from these factors people around you and your personality and the way you think, but to make a decision you need to be more firm with yourself, first of all you need to decide what do you want from this decision which means that the result you won't and you seek for otherwise you will not reach what you want easily and you can put underline for the word "easily".
May be there are two people have the same goal and they reach their but now we can talk about the word "easily", First one reached his goal with many overthinking and psychological problems.
Because he was hesitant in his decision every day and every moment he does what people want from him with comfort, but when his personal decision does not perform well because he is hesitant and does not know the right direction from which he can reach his goal and all these problems and even if you reach your goal, in the end you will not You are happily the second person who has arranged his priorities and made a plan and walked in a way knowing his decision and its result.
Self-confidence is one of the most important factors that help a person to succeed in life, simply because if you do not trust yourself, how do you expect others to trust you, so you must be this person who knows what he wants and how to do it, because this is the beginning of self-confidence and the beginning of the development that may occur For the human being in the formation of the positive personality that he dreams of.
Some may see that self-confidence is arrogance and arrogance, but no, my friend, there is a difference between confidence accompanied by arrogance, which we certainly do not like, and the confidence that I mentioned to you in the example about the second person who sets his priorities and arranges his plan that he walks, this person is not random and therefore will not be hesitant.
Science is the most important factor in building the personality of a person who is confident in himself, because he has information about everything he does, about its result, and about the mistakes that may occur in it, and therefore he is ready to deal with anything.
Finally, the skilled sailor who knows how to deal with the storm is confident in himself because he is well trained and has sufficient knowledge to deal with the crisis. As for the arrogant who does not know how to make his way even in the calm sea, he will not be able to cross the difficulties or reach his goal.
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People tend to switch self confidence with over confidence which is very sad to see because they are so different