really nice post and pretty mature for your age if I compare this with myself when I was your age.

One of the most important lessons I have learned in my life so far is not to care too much what others think of you. The less I care the happier I get.

With 18 I thought I am a man now I know I life works.

With 22 I looked back and thought the same and was laughing how inmature I was with 18.

This kept happening to this day( I am 33 now and the one thing I have learned I will never know how life works. What makes it beautiful and scary at the same time.
When I think back how I saw my parents when I was little : totally figured everything out, not scared of anything and now when I wear their shoes now they have been wearing when I was young I have a lot more respect for them.

One point I disagree with you as I see words only powerful if action follow. Your words should be inline with your actions and these 2 combined make the most powerful impact you can have on the world.