Praying for our needs
We do not pray for our needs on Shabbos. Yet, Shabbos is the day that we are the closest to Hashem. Wouldn’t it make more sense to pray for our needs only on Shabbos? Rav Pincus, zt’l explains the relationship between prayer and Shabbos. He says that Shabbos is a special opportunity to develop our relationship with Hashem. Hashem wants us to have a break from our worries on Shabbos. He wants us to be happy to just be with Him. After spending Shabbos together, we can come to talk to Hashem about our needs. But, now, we are speaking as His close friend.
Shabbos also has the power to heal. Sometimes when we let go and trust Hashem on Shabbos, we can come to view our challenges differently. What before Shabbos seemed to us as stumbling blocks, might now appear as opportunities.
See Nefesh Shimshon, Shabbos Kodesh, Making the most of Shabbos by Rav Shimson Dovid Pincus, page 37 for more on this thought.