Grounding techniques keep you focused in this reality as you go about your daily lives. If you are ungrounded, you can feel spacey and vague and have difficulty functioning due to your mind being elsewhere.
When you are ungrounded, you may struggle to focus and function fully. You can remedy this by using a grounding activity every day.
Do you ever pick up an object and start to feel different? Energy and emotions can transfer from person to person on items in shops and the home.
Your aura, auric field or energy field are just different names for the same thing. We each have a field of energy around our physical bodies and sometimes it can be damaged, but it can be repaired.