Do you feel differently in your 30s than your 20s?

I turned 30 and am confused about how to feel.

i started off feeling very serious and mature.

Then I felt like my former self.

I am confused as to what to feel do you feel different or the same and all that's happened is you're a bit older?

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+1 y
by the way I look really young.

I could pass for a 26 year old.
Do you feel differently in your 30s than your 20s?
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