Joy, a Spirit-empowered fruit, is found in Jesus and what he has done for us, not found in our circumstances.
Christ Has Set Us Free
5:1 For freedom Christ has set us free; stand firm therefore, and do not submit again to a yoke of slavery.
2 Look: I, Paul, say to you that if you accept circumcision, Christ will be of no advantage to you. 3 I testify again to every man who accepts circumcision that he is obligated to keep the whole law. 4 You are severed from Christ, you who would be justified  by the law; you have fallen away from grace. 5 For through the Spirit, by faith, we ourselves eagerly wait for the hope of righteousness. 6 For in Christ Jesus neither circumcision nor uncircumcision counts for anything, but only faith working through love.
7 You were running well. Who hindered you from obeying the truth? 8 This persuasion is not from him who calls you. 9 A little leaven leavens the whole lump. 10 I have confidence in the Lord that you will take no other view than mine, and the one who is troubling you will bear the penalty, whoever he is. 11 But if I, brothers,  still preach  circumcision, why am I still being persecuted? In that case the offense of the cross has been removed. 12 I wish those who unsettle you would emasculate themselves!
13 For you were called to freedom, brothers. Only do not use your freedom as an opportunity for the flesh, but through love serve one another. 14 For the whole law is fulfilled in one word: “You shall love your neighbor as yourself.” 15 But if you bite and devour one another, watch out that you are not consumed by one another.
Walk by the Spirit
16 But I say, walk by the Spirit, and you will not gratify the desires of the flesh. 17 For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh, for these are opposed to each other, to keep you from doing the things you want to do. 18 But if you are led by the Spirit, you are not under the law. 19 Now the works of the flesh are evident: sexual immorality, impurity, sensuality, 20 idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions, 21 envy,  drunkenness, orgies, and things like these. I warn you, as I warned you before, that those who do such things will not inherit the kingdom of God. 22 But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, 23 gentleness, self-control; against such things there is no law. 24 And those who belong to Christ Jesus have crucified the flesh with its passions and desires.
25 If we live by the Spirit, let us also walk by the Spirit. 26 Let us not become conceited, provoking one another, envying one another.
Do Not Pass Judgment on One Another
14:1 As for the one who is weak in faith, welcome him, but not to quarrel over opinions. 2 One person believes he may eat anything, while the weak person eats only vegetables. 3 Let not the one who eats despise the one who abstains, and let not the one who abstains pass judgment on the one who eats, for God has welcomed him. 4 Who are you to pass judgment on the servant of another? It is before his own master  that he stands or falls. And he will be upheld, for the Lord is able to make him stand.
5 One person esteems one day as better than another, while another esteems all days alike. Each one should be fully convinced in his own mind. 6 The one who observes the day, observes it in honor of the Lord. The one who eats, eats in honor of the Lord, since he gives thanks to God, while the one who abstains, abstains in honor of the Lord and gives thanks to God. 7 For none of us lives to himself, and none of us dies to himself. 8 For if we live, we live to the Lord, and if we die, we die to the Lord. So then, whether we live or whether we die, we are the Lord's. 9 For to this end Christ died and lived again, that he might be Lord both of the dead and of the living.
10 Why do you pass judgment on your brother? Or you, why do you despise your brother? For we will all stand before the judgment seat of God; 11 for it is written,
“As I live, says the Lord, every knee shall bow to me,
and every tongue shall confess  to God.”
12 So then each of us will give an account of himself to God.
Do Not Cause Another to Stumble
13 Therefore let us not pass judgment on one another any longer, but rather decide never to put a stumbling block or hindrance in the way of a brother. 14 I know and am persuaded in the Lord Jesus that nothing is unclean in itself, but it is unclean for anyone who thinks it unclean. 15 For if your brother is grieved by what you eat, you are no longer walking in love. By what you eat, do not destroy the one for whom Christ died. 16 So do not let what you regard as good be spoken of as evil. 17 For the kingdom of God is not a matter of eating and drinking but of righteousness and peace and joy in the Holy Spirit. 18 Whoever thus serves Christ is acceptable to God and approved by men. 19 So then let us pursue what makes for peace and for mutual upbuilding.
20 Do not, for the sake of food, destroy the work of God. Everything is indeed clean, but it is wrong for anyone to make another stumble by what he eats. 21 It is good not to eat meat or drink wine or do anything that causes your brother to stumble.  22 The faith that you have, keep between yourself and God. Blessed is the one who has no reason to pass judgment on himself for what he approves. 23 But whoever has doubts is condemned if he eats, because the eating is not from faith. For whatever does not proceed from faith is sin.  (ESV)
 5:4 Or counted righteous
 5:11 Or brothers and sisters; also verse 13
 5:11 Greek proclaim
 5:21 Some manuscripts add murder
 14:4 Or lord
 14:11 Or shall give praise
 14:21 Some manuscripts add or be hindered or be weakened
 14:23 Some manuscripts insert here 16:25-27