Can I use crystals to strengthen my aura?

Name: Meera

Date of Birth: 22 March 1992

Place of Birth: Pune, India

Time of Birth: 7:40 AM

I always read about crystals, so I know that this helps in balancing energy and to strengthen the aura, but I don't know which one to use and which one to not. Also, I don't know anything about how to apply them. I know, I have read about it, but, does it really make any difference in my personal energy and in my emotional stability?