I'll follow the same procedure as described in Are these narrations of Ibn as-Sunni authentic? (Part 2) and applied in Are these narrations of Ibn as-Sunni authentic? (Part 1).
Note this is a work in progress:
Analysis of the du'a: Alhamdu Li-Llahi al-Ladhi wahaba lana hada al-Yawm ...
Hadith including the full narrator chain in ibn as-Sunni's book
148 - ...
it is a proven and established in islam to make dua in certian times and certian places if the person is able. there are reports about making dua between the adhan and iqamah, during the last third of the night, during a certian time on friday, during the night of qadr etc. among the reports about making dua in certian places it is mentioned, ...
it is beyond any doubt in our hearts that Allah the mighty and sublime knows everything, from eternity to eternity. with that firm conviction let us remember these verses from the quran.
And I did not create the jinn and mankind except to worship Me. [51:56]
after giving us a purpose in life, Allah the exalted and glorified says,
And your ...
Both of the dua are from Authentic Hadith.
أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّاتِ مِنْ شَرِّ مَا خَلَقَ
سُبْحَانَ اللَّهِ وَبِحَمْدِهِ عَدَدَ خَلْقِهِ وَرِضَا نَفْسِهِ وَزِنَةَ عَرْشِهِ وَمِدَادَ كَلِمَاتِهِ
You could recite both these Dua on a daily basis after Fajr Salah and Maghrib Salah as suggested by many scholars.
The second ...
What you are describing is a typical issue of "Waswas" based on not having knowledge about a situation in Islam (which is the main reason why people suffer from this).
Regarding your mentioned problem, in Islam you are not punished for a bad or uncomfortable thought that crosses your mind (as long as a thought is crossing your mind once in a while, ...