I think this is a fun Chanda article that says all the Chabaf Staffs knowledge on the 7 thank you Jewish ways there are to say thank you in our main stream?

I guess just as this says there is so much good in the world and so many good people that if you do just one nice thing for someone you will be able to see in your reality how everything will go for the best for you from now on always and all the time. This k worker is supposed to stay with you the rest of you're life and give you a guiding light to be able to know what's in store for people who say thank you to everyone and always as much as possible 

https://www.chabad.org/library/article_cdo/aid/4200327/jewish/7-Jewish-Ways-to-Give-Thanks.htm