We all make mistakes and learn a few things while growing up and 20s is the time when people experiment with their lives and take big decisions which shape up the comings years. Many have shared their experiences on the internet and what mistakes they committed on younger years.
Partying on most days and not realizing you are turning into an alcoholic.
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Giving no importance to healthy lifestyle and not exercising at all.
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Being influenced by people and not being able to shape up own's personality.
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Paying no attention to skin and not wearing sunscreen.
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Not saving and investing the money.
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Spending time with people and still not forming meaningful relationships.
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Rushing into decisions and not taking time to think.