"The more one knows GD and has faith in His protective care and abounding providence the more trust one has in Him"
pg 467
Nefesh Hachaim
"Before sitting down to study Torah one should reflect on the importance of yiras Shamayim and repentance so that through his learning he connects with the Creator."
Gate Four, chapter 7 pg 144
Pirkei Avos
"Every Jew has a portion in the World to Come". Every Jew is to understand that he should never despair of gaining a place in the World to Come. This is because every Jew has a portion within that can gain him this reward. This portion is his Nefesh his soul.
Alshich on Avos, Perek Alef pg 4