To stop these thoughts and fall in love with waheguru, u need to do more satsangat. Loving waheguru will help u to remember him all th time. When someone has a crush on anothér person, the crush is in our thoughts all the time.
So to fall in love with waheguru, do satsangat of sants, ppl already on the gurus path, read sikh literature and history,biography of sants, and watch videos and katha, and most importantly read gurbani. Start a sehaj paath.
Reading gurbani is the best, waheguru will automatically be in your thoughts and gurbani will teach you about his attributes, his worth, his personality. Start a sehaj paath, its great, its like guruji is speaking to you personally everyday. Do it on ur phone, if u have no sanchiya.
Also read sikh literature on vidhia.com, especially Baba Naudh Singh by Bhai Vir Singh and Rangle Sajjan by bhai randhir singh. Very inspiring. Also read bandginama by bhai raghbir singh bir, explains alot about bhagti.
Also watch katha of bhai sahib singh canada wale on youtube or soundcloud. Will calm ur thoughts.
There is also gurmat literature section on gurmatbibek.com and basicsofsikhi youtube channel.
Most importantly keep doing swaas swaas simran. It might take a while. First ur mind will be cleaned from doubt, anger, greed, then it will become filled with good qualities, naam ras, and the presence of God.
There is a sakhi, of a woman, who heard simran is important, so she decided to do it. She told her family, i will not talk but i will do all the work, cooking cleaning, if u need anything write me a note. Then from that day, she started japping naam outloud. The family would hear her all day, saying waheguru waheguru loudly the whole day as she worked. Only at night there would be silence. This went on for a year i think. Everyday the family heard her all day saying waheguru loudly. Then one day there was silence. They were surprised n they asked why have u stopped now? For the past year thats all we heard waheguru. She said i found wat i needed, so i dont need to shout. The one who i was calling, is here, i dont need to call anymore
So keep going. You will reach the goal. Just keep inspiring urself with satsangat of gurmukhs, books, and katha, and Bani.
PS. I remember you, Welcome back!