I totally agree with this quote and believe it couldn't be truer about joyfulness.
Joy is a different feeling then happiness. For July, while focusing on this word, when I'd normally look for moments of happiness I instead looked for joy. I actually think I have found it easier to identify joy then happiness.
When I feel true joy, it's just like the quote from the card says, life seems easier to flow through. Some things that brought me joy throughout July include my job, lots of yoga and TRX, and spending time in Mexico with my mom to celebrate my graduation from high school.
I think that knowing what brings me joy is a valuable thing - it can be so many different things... spending time in nature, going to work, traveling, and so much more!