Hello shahana,
From my experience, Below I've mentioned some points for you. Please apply those points and observe for self.
Fist accept your weaknesses.
Get guidance from someone maybe your parents or friends or workes. (those people need to have a good attitude, positive thinker)
Set goals to create an action plan for improving weaknesses.
Reward Yourself.
Taking too many risks.
Utilize your strengths to build confidence.
Count every success.
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