Please don't worry about me.
I am no longer the child who just hides in the corner and cries.
I have grown up.
I won't be bullied. I'll hide behind you.
From now on, I will stand in front of you/block all the injuries/all the storms.
I have grown up.
I'll let you know.
No longer weak under the weak appearance.
I will let you know what tenacity/strength is.
I have grown up.
No more tears of cowards.
My tears only flow for moving/happiness.
I have grown up.
I won't make you sad again.
I will love you in my own way.