How to built self confidence

For this three pillars are required to mind for lifetime i. e., PASSION,PRACTICE and PATIENCE.
Let us take an example of a game which you
you are going to play and are proudly speaking that I will definitely win even when you are playing it just second time. So is this is considered as Passion, obviously this is not the passion on the other hand you are saying that I have practice this twice so I hope that I will win but these short term game can't stuck my whole life. This is what Passion is.!! Built in things which makes you overconfident never comes under Passion, so try to know the meaning of passion - It is something which lead you to have that inner feel that I can do this but sometimes may time is not with me, also think what your thinking should not be only that a dream it should be a something practical.
Along with Passion, Practice comes what you want to acheive you need to practice hard. For practice you need a trainer and that trainer should be specialized in that particular field. It's not like getting trained from unexperienced person. Sometimes you think of doing something but your relatives says wrong about that and you just stop thinking. So think before stepping back because you may take wrong decision because you should think tha you are listening to that personality which is nearly unexperienced in that field instead you should meet the right person and should ask from him that how to achieve what you want to acheive.
Next after this whole process their comes the result which is obviously not in one's hand. For this what is required is Patience. You need to have patience as you even may loose the game but you should be thinking that one big experience you got and life is not till today it is too long and it's like a life game which is not in the favour of one team sometimes one team wins and sometimes the other one So have faith in yourself for your welfare only.