Psalm 63

Joy may also come from practicing kindness and/or serving others. This approach to life feeds a sense of purpose and optimism. Kindness can happen in simple, daily interactions: recognize the dignity of another person and choose compassion and courtesy in your exchanges. Likewise, you can serve others informally by being a good neighbor and caring for others with acts of thoughtfulness, or more formally by volunteering for a cause in which you believe. Such outreach can be as modest as making a meal or checking in with people by phone. It may take a more committed path as a dedicated volunteer who supports others, and should be done with balance and boundaries.
            As a spiritual practice, this is an empowering approach to life. It identifies your competencies and capabilities, and reminds you that you have choices. It affirms your value and purpose as a human being and helps to acknowledge others, also.  
            Being kind and being of service enlarge personal perspectives. They alter the understanding of others’ circumstances, thus allowing you to recognize your own blessings. They cultivate appreciation for your own individual agency and the ability to be helpful to others. With kindness and service, through small acts or major forms of participation, you may renew your internal sense of fulfillment and joy. — Rev Gail

… for you have been my help, and in the shadow of your wings I sing for joy. — Psalm 63:7

But let all who take refuge in you rejoice; let them ever sing for joy. Spread your protection over them … — Psalm 5:11

To get the full value of joy you must have someone to divide it with. ― Mark Twain

The joy that isn’t shared dies young. — Anne Sexton

Find joy in everything you choose to do. Every job, relationship, home… It’s your responsibility to love it, or change it. – Chuck Palahniuk

When you can stop and ask yourself, “How can I help,” or, “How can I be of service,” you create a new internal dialogue that leads to alternative and expanded ways of thinking and responding. … You have something to offer, a gift brought into this world to share with others. It could be your ability to listen, give a great hug, advocate for those in need, build something, or be there for someone In being able to share this gift, you build a greater sense of connection and belonging, something you can relate to as a basic need. Joy is often a side effect of what can happen when you are in the service of something greater than yourself. — Rachelle Williams

Gratitude begins in our hearts and then dovetails into behavior. It almost always makes you willing to be of service, which is where the joy resides. It means that you are willing to stop being such a jerk. When you are aware of all that has been given to you, in your lifetime and the past few days, it is hard not to be humbled, and pleased to give back. — Anne Lamott