By Strength or by the Spirit?

«Then he [the angel, Zechariah 4:1] said to me [the prophet Zechariah], "This is what the Lord says to Zerubbabel: It is not by force nor by strength, but by my Spirit, says the Lord of Heaven's Armies. Nothing, not even a mighty mountain, will stand in Zerubbabel's way; it will become a level plain before him! And when Zerubbabel sets the final stone of the Temple in place, the people will shout: 'May God bless it! May God bless it' "» (Zechariah 4:6-7, New Living Translation).

What circumstances of your life require trusting in the Lord, as the prophet Zechariah invited Zorobabel to do in his day?