Can I recommend having 2 mirrors, each facing the other and good lighting.
You can then see what others see, instead of the straight, face-on view we tend to focus on.
Also, get someone to video you and watch it back.
Getting an all round idea of what your hair looks like and making improvements if necessary will really help you be more confident about how you're being seen by others.

I realised that my hair looked a bit flattened at the crown.
It was also way too neat.
It looks fine like that straight on, but a bit lifeless from the side & back.
So now I spike it up a bit at the back & crown.
Its little things like that that make the difference.