I can do nothing

John 5:19 Then answered Jesus and said unto them, Verily, verily, I say unto you, The Son can do nothing of himself, but what he sees the Father do: for what things soever he does, these also does the Son likewise. 

John 5:30-32 I can of mine own self do nothing: as I hear, I judge: and my judgment is just; because I seek not mine own will, but the will of the Father which hath sent me. If I bear witness of myself, my witness is not true. There is another that bears witness of me; and I know that the witness which he witnesses of me is true.

This was Jesus' witness about himself. He demonstrates his complete submission to the Father in everything that He did. He did not boast or promote himself, the works that the Father gave Him to do, they were the witness. He set His will aside, and only did the will of His Father. His complete submission is no better illustrated than in the Garden of Gethsemane where He prayed; not my will, but yours be done. More can be seen about this Here.

Jn 8:28-29 Then said Jesus unto them, When ye have lifted up the Son of man, then shall ye know that I am he, and that I do nothing of myself; but as my Father hath taught me, I speak these things. And he that sent me is with me: the Father hath not left me alone; for I do always those things that please him.

In the book of Jeremiah we see his exhortation to trust God and not yourself. If Jesus did this, should we not also do the same?

Jer 17:5-8 Thus saith the LORD; Cursed be the man that trusts in man, and makes flesh his arm, and whose heart departs from the LORD. For he shall be like the heath in the desert, and shall not see when good cometh; but shall inhabit the parched places in the wilderness, in a salt land and not inhabited. Blessed is the man that trusts in the LORD, and whose hope the LORD is. For he shall be as a tree planted by the waters, and that spreads out her roots by the river, and shall not see when heat cometh, but her leaf shall be green; and shall not be careful in the year of drought, neither shall cease from yielding fruit.

Psa 34:7-8 The angel of the LORD encamps round about them that fear him, and delivers them. O taste and see that the LORD is good: blessed is the man that trusts in him.

Ps 84:11-12 For the LORD God is a sun and shield: the LORD will give grace and glory: no good thing will he withhold from them that walk uprightly. O LORD of hosts, blessed is the man that trusts in thee.

Those that trust in the Lord show themselves to be obedient, and to hate evil (the fear of the Lord) they walk uprightly and receive great blessings of protection from the Lord.

It is so much better to walk in the ways of the Lord than in the ways of men, including your own!