Genuinely something you wish you could tell your 23 yr old self?

Feeling really stuck in a rut, I would love to hear what is one thing you would tell yourself if you were 23 again?

All help really appreciated.

For a small bit of context, I’m 23 in two days, already in a career of beauty/skin for the last five years and feeling fed up.

I would like to move onto nursing next yet but fear I’ll be too old when I graduate at 28yrs of age.

Just any advice on this or general life advice!