23 years old and Vaping 24mg.? What type of Tank and Mod/battery are you using?
24 does sound high, especially at such a young age. Nic addiction(From Smoking) Builds gradually over time and with consumption. Normally only the long time Heavy(2+ PAD) smokers require a starting Nic level over 20mg.
I Smoked 2 PAD for 45 years, started Vaping at 18mg. moved down over the next year to 6mg and am now vaping at 3 mg. with Good equipment.
Your Body is all that matters. If it says no, don't Vape.
I'd love to reach that point.
Good luck!