Preserve me, O God, for in you I take refuge. I say to the Lord, “You are my Lord; I have no good apart from you.” As for the saints in the land, they are the excellent ones, in whom is all my delight. The sorrows of those who run after another god shall multiply; their drink offerings of blood I will not pour out or take their names on my lips. The Lord is my chosen portion and my cup; you hold my lot. The lines have fallen for me in pleasant places; indeed, I have a beautiful inheritance. I bless the Lord who gives me counsel; in the night also my heart instructs me. I have set the Lord always before me; because he is at my right hand, I shall not be shaken. Therefore my heart is glad, and my whole being rejoices; my flesh also dwells secure. For you will not abandon my soul to Sheol, or let your holy one see corruption. You make known to me the path of life; in your presence there is fullness of joy; at your right hand are pleasures forevermore. (Psalms 16:1-11 ESV)
What is good in us?
How does anyone do good?
If we hear and believe what the psalmist says, no one can do good apart from God. Which means everyone that does good is filled with God… We have no good without God. But when we have Him we are filled with His goodness and it over flows from us to everyone around us. He gives us a wonderful inheritance and blesses us with more than we could imagine.
So look to Him to be your portion and your cup to fill you with goodness.

Examine yourselves, to see whether you are in the faith. Test yourselves. Or do you not realize this about yourselves, that Jesus Christ is in you?—unless indeed you fail to meet the test! I hope you will find out that we have not failed the test. But we pray to God that you may not do wrong—not that we may appear to have met the test, but that you may do what is right, though we may seem to have failed. For we cannot do anything against the truth, but only for the truth. For we are glad when we are weak and you are strong. Your restoration is what we pray for. For this reason I write these things while I am away from you, that when I come I may not have to be severe in my use of the authority that the Lord has given me for building up and not for tearing down. (2 Corinthians 13:5-10 ESV
On the next day, when they had come down from the mountain, a great crowd met him. And behold, a man from the crowd cried out, Teacher, I beg you to look at my son, for he is my only child. And behold, a spirit seizes him, and he suddenly cries out. It convulses him so that he foams at the mouth, and shatters him, and will hardly leave him. And I begged your disciples to cast it out, but they could not. Jesus answered, O faithless and twisted generation, how long am I to be with you and bear with you? Bring your son here. While he was coming, the demon threw him to the ground and convulsed him. But Jesus rebuked the unclean spirit and healed the boy, and gave him back to his father. And all were astonished at the majesty of God. But while they were all marveling at everything he was doing, Jesus said to his disciples, (Luke 9:37-43 ESV)
Therefore remember that at one time you Gentiles in the flesh, called the uncircumcision by what is called the circumcision, which is made in the flesh by hands— remember that you were at that time separated from Christ, alienated from the commonwealth of Israel and strangers to the covenants of promise, having no hope and without God in the world. But now in Christ Jesus you who once were far off have been brought near by the blood of Christ. For he himself is our peace, who has made us both one and has broken down in his flesh the dividing wall of hostility by abolishing the law of commandments expressed in ordinances, that he might create in himself one new man in place of the two, so making peace, and might reconcile us both to God in one body through the cross, thereby killing the hostility. And he came and preached peace to you who were far off and peace to those who were near. For through him we both have access in one Spirit to the Father. So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God, built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone, in whom the whole structure, being joined together, grows into a holy temple in the Lord. In him you also are being built together into a dwelling place for God by the Spirit. (Ephesians 2:11-22 ESV)