Clear your mind so that you are not thinking too many thoughts.
Your only thought should be: “How do I serve God with joy?” The word b'simcha [with joy] has the same [Hebrew] letters as the word machshava [thought]. Therefore, all thoughts that come your way should be directed to serving God joyfully.
Rabbi Menachem Nachum of Chernobyl
(“God in All Moments” by Or Rose and Ebn D. Leader)