I have been having troubles vizualizing d white light for my cleaning aura meditation.... plz What's d cause n How can I overcome this

Have been finding it difficult to visualize my white light for aura cleansing.. What could b d cause n will b d solution (s)

Plz, I need a satanic rosary, I don't know where to heritage here in Nigeria.

I am Joseph,I am a Nigerian, I did my dedication 30 of April, with two blue candles. I could not meditate till d burning out of d candle.secondly I used blood Both from my left index finger and my right right arm to thumb print. Do u think my dedication was accepted.