Wazifas

Q: In Islam we know that there is something known as "nazar" or "the evil eye" and what are its negative effects and harms etc.

We would like to know, is there also such a thing in Islam as "sweet nazar" or "good nazar"?

For example, when a father or mother looks at his/her child with a look of pure love and forgets to say "Maashaa Allah", then can this glance of love have a negative effect on the child? Since there is no question of jealously for one's own child, can there still be negative effects in an innocent look out of pure love?

If so, does this principle apply to everything that is dear to you?

For example, if you look at your own car or house with a look of amazement without saying "Maa shaa Allah" then can this have a negative effect on it even though there's no question of jealousy for your own belongings. 

Q: What is the most powerful wazifa for increasing memory?

Q:

1. Does black magic cause cancer?

2. Can we know who did black magic on us? 

Q: Is it right to fear jinns because I always see people get very scared about them and wear 'taweez' (surahs written on folded paper), especially in the Indian subcontinent. But the jinns are not as supreme creatures as humans. Though I believe in them, I never fear them, actually I don't care about them. Am I doing right?

Q: A pregnant woman is advised to recite Surah Maryam and Surah Yusuf. Please advise if this is bidah or is it authentic?

Also, please advise if anything else should be recited.

Q: What is nazer-e-bad and what is the best treatment and solution for this problem?

Q: Is there any dua to read for anxiety?

Q: If two humans are talking to each other and the third person is a jinn who is listening to their talk, what dua should be recited so that the jinn does not listen to our talk?

Q: Please give me Surahs/Duas to read at night for safety. I fear being robbed. 

Q: I have a friend who I have alot of value for in my heart, however she is cold towards me. She has forgiven me for the past but doesnt wish to have any connection which I would want. It has been around 8-9 years. Will reciting the wazifa/dua for unity work for reuniting our friendship?