Sorry, this is going to be kind of long....I can never just stop at one or two....once they start coming to mind they just keep rolling on by

I love this one (even found a group who has turned it into a song!):
Psa 1:1 Blessed is the man who has not walked in the counsel of the ungodly, and has not stood in the way of sinners, and has not sat in the seat of the scornful.
Psa 1:2
But his delight is only in the Law of Jehovah; and in His Law he meditates day and night.
Psa 1:3 And he shall be like a tree planted by the rivulets of water that brings forth its fruit in its seasons, and its leaf shall not wither, and all which he does shall be blessed.
And this....
Psa 147:1
Praise Jehovah; for it is good to sing praises to our God;
for praise is delightful and becoming. Psa 147:2 Jehovah builds up Jerusalem; He gathers together the outcasts of Israel.
Psa 147:3
He heals the broken-hearted, and binds up their wounds.
Psa 147:4
He appoints the number of the stars; He calls them all by their names. Psa 147:5
Great is our LORD, and of great power; There is no limit to His understanding.
And I like this because it reminds me to continue seeking and learning, instead of thinking I know it all, not desiring to be a fool...
Pro 1:7 The fear of Jehovah is
the beginning of knowledge; but
fools despise wisdom and instruction.
And how to have wisdom and where it comes from:
Pro 2:6
For Jehovah gives wisdom; out of His mouth come knowledge and understanding.
Pro 2:7 He lays up sound wisdom for the righteous;
He is a shield to those who walk uprightly. Pro 2:8 He keeps the paths of judgment, and
guards the way of His saints. Pro 2:9
Then you shall understand righteousness and judgment and honesty, every good path.
Pro 24:3
Through wisdom a house is built, and by understanding it is established;
Pro 24:4
and by knowledge the rooms shall be filled with all precious and pleasant riches.
And this because it reminds of who God is, and what He has done for me:
Col 1:13
For He has delivered us from the power of darkness and has translated us into the kingdom of His dear Son;
Col 1:14 in whom we have redemption through His blood, the remission of sins.
Col 1:15 who is the image of the invisible God, the First-born of all creation.
Col 1:16 For all things were created in Him, the things in the heavens, and the things on the earth, the visible and the invisible, whether thrones or dominions or principalities or powers, all things were created through Him and for Him.
Col 1:17 And He is before all things, and by Him all things consist.
Col 1:18 And He is the Head of the body, the church, who is the Beginning, the First-born from the dead, that He may be pre-eminent in all things.
Col 1:19 For it pleased the Father that in Him all fullness should dwell.Gracey
....I can't really say I have a "most" favourite. At certain times some are so appropriate to a situation they are my "favourite" then....