Consider this !
We get so worried about what we look like, how we sound, what to wear, what other people think of us etc etc etc !
As I am now approaching my 50's I have started to think more about my mortality.
I have started to look back on my life and think that I wasted so much of my life worrying about everything and that it basically held me back from making the most of the opportunities that presented themselves to me.
Now I realise that our time on this earth is so short that we are literally here for what is just a blink of an eye in the grand scale of things.
Why do we waste so much of our time on things that are superficial at best when what we should be doing is not giving a damn what others think but instead just go for the things that we want and to hell with the consequences.
Making mistakes in life is how we grow and develop and learn not to make them again. So my advice is to just go out there and do stuff ! Make the mistakes in the process and learn to do things better next time.
Life is so short that we can't afford to waste our time worrying about stuff.