Dissatisfaction is a good thing. It's the fuel that pushes you to do something. Maybe it's something big like switching careers or cutting ties with toxic relationships, but most often it's small things like picking up a new hobby, volunteering, or taking a vacation.
Don't dismiss dissatisfaction. Look into your life and see what you need to change.
Braces on adults are common enough that most people don't care. There are options like Invisalign, ceramic or clear braces, and lingual braces (brackets behind the teeth) that you can ask about. If you work somewhere with a strict dress code you might want to stick to clear and white colored rubber bands, too. Though outside of that, people still won't care and colored rubber bands are cute.